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Trip to harbor freight (grinding)
I got the itch for a grinder and learned that there was a Harbor Freight
place only 100 miles from work so I headed down there to buy of of these. http://www.harborfreight.com/cpi/cta...emnumber=46727 Well, I got there and from 20 feet away I liked it. At 1 foot I passed. Darn display model had .020 or worse wobble as in flange not square to shaft. Having bought a chinie grinder before that turned out to be lots of iron and no electrics I wasn't too eager to get burned again. Now likely I could have taken the wheel mounting flanges off and squared them up off the machine or even in the machine but at that point I only had 16 bucks worth of gas in this thing for the round trip and decided to back away quickly. Anyway, I'm going to build my own now. I have a 1725 tefc motor, some pillow block bearings, and chunk of ductile cast iron that I am going to turn into a rotary lap that I'll charge with 1200 grit diamond paste to finish the edges. So what grit silicon carbide metal backed cup wheel should I buy? Wes |
Trip to harbor freight (grinding)
Wes wrote:
I got the itch for a grinder and learned that there was a Harbor Freight place only 100 miles from work so I headed down there to buy of of these. http://www.harborfreight.com/cpi/cta...emnumber=46727 Well, I got there and from 20 feet away I liked it. At 1 foot I passed. Darn display model had .020 or worse wobble as in flange not square to shaft. Having bought a chinie grinder before that turned out to be lots of iron and no electrics I wasn't too eager to get burned again. Now likely I could have taken the wheel mounting flanges off and squared them up off the machine or even in the machine but at that point I only had 16 bucks worth of gas in this thing for the round trip and decided to back away quickly. Anyway, I'm going to build my own now. I have a 1725 tefc motor, some pillow block bearings, and chunk of ductile cast iron that I am going to turn into a rotary lap that I'll charge with 1200 grit diamond paste to finish the edges. So what grit silicon carbide metal backed cup wheel should I buy? Wes In a number of cases I've found the item in the crate to be notably better than the item on display. |
Trip to harbor freight (grinding)
"Pete C." wrote:
In a number of cases I've found the item in the crate to be notably better than the item on display. That sure is poor marketing. I thought about asking them to grab a box and let me inspect it but I was a bit tired and p*ssed seeing the display model having driven 100 miles. I work mid nights and get a bit cranky by 10 am. Wes |
Trip to harbor freight (grinding)
"Wes" wrote: (clip) I thought about asking them to grab a box and let me inspect it but I was a bit tired and p*ssed (clip) ^^^^^^^^^^^^^^^^^^^ If you ever decide to go back to HF, stop a few blocks short and take a little nap. By being tired and p*ssed, you scr*wed yourself. You drove 200 miles, used $16 worth of gas, and spent about 3 hours, and came away with NOTHING. Quality control on the Chinese product at Harbor Freight is known to be poor. Don't assume that what you see is what you get, unless it's the exact same unit you're going to take home. If you don't want to take up their time, go back to your car and open the box. HF is really good about exchanging merchandise or giving refunds. Just keep your receipt--DAMHIKT. |
Trip to harbor freight (grinding)
"Leo Lichtman" wrote:
"Wes" wrote: (clip) I thought about asking them to grab a box and let me inspect it but I was a bit tired and p*ssed (clip) ^^^^^^^^^^^^^^^^^^^ If you ever decide to go back to HF, stop a few blocks short and take a little nap. By being tired and p*ssed, you scr*wed yourself. You drove 200 miles, used $16 worth of gas, and spent about 3 hours, and came away with NOTHING. Quality control on the Chinese product at Harbor Freight is known to be poor. Don't assume that what you see is what you get, unless it's the exact same unit you're going to take home. If you don't want to take up their time, go back to your car and open the box. HF is really good about exchanging merchandise or giving refunds. Just keep your receipt--DAMHIKT. Well, I take the long view on this. If I had ordered it, paid UPS on 102# and didn't like it, I'd have been really p*ss*d and out the shipping. 16 bucks on gas was worth it. Three blocks away was a tire store with 7 cop cars obviously interested in something that morning. No way I was going to sleep in my car after that one on the way in. You are right that I should have asked for a box though and inspected it on site. I have a 3/4 hp grinder out in the garage that I can stop with a finger and not lose skin so I'm a bit leery of chinese grinders. Wes |
Trip to harbor freight (grinding)
"Leo Lichtman" wrote:
You drove 200 miles, used $16 worth of gas, and spent about 3 hours, and came away with NOTHING. In my edits on this post I trimmed out some things. I bought two of these http://www.harborfreight.com/cpi/cta...emnumber=92486 for 15 bucks each. Handy for moving my 12x36 lathe around until I have it restored and set and leveled. Also I bought some rolling head pry bars. Damn handy things. It was not a totally wasted trip. http://www.harborfreight.com/cpi/cta...emnumber=31382 Sadly they didn't have these in stock. http://www.harborfreight.com/cpi/cta...temnumber=7929 If you ever buy some buy a pair, works out better. Wes |
Trip to harbor freight (grinding)
"Wes" wrote in message ... snip------ So what grit silicon carbide metal backed cup wheel should I buy? You didn't make clear your intended application. Are you sure you want a silicon carbide wheel? Harold |
Trip to harbor freight (grinding)
"Harold and Susan Vordos" wrote:
"Wes" wrote in message ... snip------ So what grit silicon carbide metal backed cup wheel should I buy? You didn't make clear your intended application. Are you sure you want a silicon carbide wheel? Harold Carbide scraper is primary use, brazed carbide lathe bits secondary. Thanks, Wes |
Trip to harbor freight (grinding)
"Wes" wrote in message ... "Harold and Susan Vordos" wrote: "Wes" wrote in message ... snip------ So what grit silicon carbide metal backed cup wheel should I buy? You didn't make clear your intended application. Are you sure you want a silicon carbide wheel? Harold Carbide scraper is primary use, brazed carbide lathe bits secondary. Thanks, Wes Yep, silicon carbide it is, and a green one. I'm not versed in scraping, but I've read that the edge should be exceedingly keen----so you might entertain a very fine wheel, 150 grit or even finer. Best yet would be a diamond, which won't chip the carbide. You'd be pretty happy with a 220 diamond, which will move carbide fast and leave a decent surface that is easily lapped to perfection. A diamond wheel should be run wet, so keep that in mind. Harold |
Trip to harbor freight (grinding)
Wes wrote:
I got the itch for a grinder and learned that there was a Harbor Freight place only 100 miles from work so I headed down there to buy of of these. http://www.harborfreight.com/cpi/cta...emnumber=46727 Well, I got there and from 20 feet away I liked it. At 1 foot I passed. Darn display model had .020 or worse wobble as in flange not square to shaft. Having bought a chinie grinder before that turned out to be lots of iron and no electrics I wasn't too eager to get burned again. Now likely I could have taken the wheel mounting flanges off and squared them up off the machine or even in the machine but at that point I only had 16 bucks worth of gas in this thing for the round trip and decided to back away quickly. Anyway, I'm going to build my own now. I have a 1725 tefc motor, some pillow block bearings, and chunk of ductile cast iron that I am going to turn into a rotary lap that I'll charge with 1200 grit diamond paste to finish the edges. So what grit silicon carbide metal backed cup wheel should I buy? Wes I bought one of those a couple of years ago. I've been really happy with mine. I've ground better lathe tools than I was ever able to do before this machine. (That may just mean I don't have much ability, but this machine really improved my efforts). I did hook up a water supply and drain, but that is all I've done. FWIW I recommend this grinder. From your experience, get one in a box! John |
Trip to harbor freight (grinding)
On Oct 27, 7:11 am, Wes wrote:
I got the itch for a grinder and learned that there was a Harbor Freight place only 100 miles from work so I headed down there to buy of of these. http://www.harborfreight.com/cpi/cta...emnumber=46727 Well, I got there and from 20 feet away I liked it. At 1 foot I passed. Darn display model had .020 or worse wobble as in flange not square to shaft. Having bought a chinie grinder before that turned out to be lots of iron and no electrics I wasn't too eager to get burned again. Now likely I could have taken the wheel mounting flanges off and squared them up off the machine or even in the machine but at that point I only had 16 bucks worth of gas in this thing for the round trip and decided to back away quickly. Anyway, I'm going to build my own now. I have a 1725 tefc motor, some pillow block bearings, and chunk of ductile cast iron that I am going to turn into a rotary lap that I'll charge with 1200 grit diamond paste to finish the edges. So what grit silicon carbide metal backed cup wheel should I buy? Wes **** a Duck - you Yanks are totally up yourselves. Your complaining the 149.50 tool grinder is not up to scratch.....JHC, what the **** do you want for that? - do you expect a high precision industrial quality instrument? - yeh, sure, if its a sale from the rust belt of US manufacturing, else its totally worn out....wow, $16 for 200 miles in gas cost - wish the rest of the world had it so cheap.... Mate, you well off, just too dumb to realise it..... Andrew VK3BFA. |
Trip to harbor freight (grinding)
**** a Duck - you Yanks are totally up yourselves. Your complaining the 149.50 tool grinder is not up to scratch.....JHC, what the **** do you want for that? - do you expect a high precision industrial quality instrument? - yeh, sure, if its a sale from the rust belt of US manufacturing, else its totally worn out....wow, $16 for 200 miles in gas cost - wish the rest of the world had it so cheap.... Mate, you well off, just too dumb to realise it..... Andrew VK3BFA.- Hide quoted text - - Show quoted text - As a bemused by-stander, I must agree. We have had it far too good for far too long here. The decimation of the US industrial manufacturing base due to both poor response to global competition and the "WalMart" consumer mentality in this country is staggering. In the area of Chinese tools, there is a lot to choose from, but it has now actually become quite difficult to distinguish in some cases what the actual country of origin may be, since so many US suppliers now outsource the "dirty work" to China or other countries, then rebrand the item as their own. I am of course guilty of buying from HF those items that don't have a high level of criticality as I see it. I would never trust a Chinese 6" caliper to work as my only measuring tool, in constant use, but for occasional use, my Chinese 12" dial caliper (at $39 or whatever the hell it was) is a good example of the "value" equation. One buys Chinese with the full knowledge that quality is widely variable, repair may be needed before first use, and safety is never paramount in the product. If you can live with that, you have the opportunity to get some real deals, and further the cause of US economic decline at the same time. |
Trip to harbor freight (grinding)
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Trip to harbor freight (grinding)
For $150, you can buy a used Baldor 500 diamond grinder from a small
shop that likely did not use it that much. i |
Trip to harbor freight (grinding)
Ignoramus2057 wrote:
For $150, you can buy a used Baldor 500 diamond grinder from a small shop that likely did not use it that much. i I'll take it if it can be shiped ups. Wes |
Trip to harbor freight (grinding)
On 2007-10-27, Wes wrote:
Ignoramus2057 wrote: For $150, you can buy a used Baldor 500 diamond grinder from a small shop that likely did not use it that much. i I'll take it if it can be shiped ups. You would have to go and pick it up from an auction, for this price. They are, however, shippable by UPS (without stands) and sell for about $250 on eBay. Hard to go wrong with a Baldor 500. I do not have one currently. i |
Trip to harbor freight (grinding)
Ignoramus2057 wrote:
On 2007-10-27, Wes wrote: Ignoramus2057 wrote: For $150, you can buy a used Baldor 500 diamond grinder from a small shop that likely did not use it that much. i I'll take it if it can be shiped ups. You would have to go and pick it up from an auction, for this price. They are, however, shippable by UPS (without stands) and sell for about $250 on eBay. Hard to go wrong with a Baldor 500. I do not have one currently. i Darn. I thought you had one. Oh well. I'll build my own lashed up grinder for now and keep my eyes open. Wes |
Trip to harbor freight (grinding)
On Oct 27, 11:32 am, matt wrote:
**** a Duck - you Yanks are totally up yourselves. Your complaining the 149.50 tool grinder is not up to scratch.....JHC, what the **** do you want for that? - do you expect a high precision industrial quality instrument? - yeh, sure, if its a sale from the rust belt of US manufacturing, else its totally worn out....wow, $16 for 200 miles in gas cost - wish the rest of the world had it so cheap.... Mate, you well off, just too dumb to realise it..... Andrew VK3BFA.- Hide quoted text - - Show quoted text - As a bemused by-stander, I must agree. We have had it far too good for far too long here. The decimation of the US industrial manufacturing base due to both poor response to global competition and the "WalMart" consumer mentality in this country is staggering. In the area of Chinese tools, there is a lot to choose from, but it has now actually become quite difficult to distinguish in some cases what the actual country of origin may be, since so many US suppliers now outsource the "dirty work" to China or other countries, then rebrand the item as their own. I am of course guilty of buying from HF those items that don't have a high level of criticality as I see it. I would never trust a Chinese 6" caliper to work as my only measuring tool, in constant use, but for occasional use, my Chinese 12" dial caliper (at $39 or whatever the hell it was) is a good example of the "value" equation. One buys Chinese with the full knowledge that quality is widely variable, repair may be needed before first use, and safety is never paramount in the product. If you can live with that, you have the opportunity to get some real deals, and further the cause of US economic decline at the same time. The post of the day...excellent assessment of the situation. We are the enemy. TMT |
Trip to harbor freight (grinding)
On Oct 27, 2:35 pm, Ignoramus2057
wrote: For $150, you can buy a used Baldor 500 diamond grinder from a small shop that likely did not use it that much. i Not if anyone else is at the auction. The Baldor diamond grinders maintain their value. That is why the Chinese chose them as an item to copy. The same goes for Emco lathes were the model for the common Chinese lathe. It is almost a badge of honor to be chosen by the Chinese as the tool to be copied....and as they take market share from you. TMT |
Trip to harbor freight (grinding)
Too_Many_Tools wrote:
We are the enemy. TMT No. You got that wrong. " We have met the enemy and he is us " Pogo ...lew... |
Trip to harbor freight (grinding)
On Oct 28, 4:34 am, Wes wrote:
wrote: **** a Duck - you Yanks are totally up yourselves. Your complaining the 149.50 tool grinder is not up to scratch.....JHC, what the **** do you want for that? - do you expect a high precision industrial quality instrument? - yeh, sure, if its a sale from the rust belt of US manufacturing, else its totally worn out....wow, $16 for 200 miles in gas cost - wish the rest of the world had it so cheap.... Mate, you well off, just too dumb to realise it..... Got your knickers in a twist today? Yep. Sorry, I put that badly - due to our small market, such a tool grinder would be hundreds of dollars more - and I dont think such a thing is even on the market here due to lack of demand. So, I freehand grind my toolbits - would be so much easier if I had one of those grinders....(envy, pure and simple, at the cheapness of tools in the US) The taxes on fuel in your country are helping to pay for your social support systems. If you don't like it, change it via the political process. Nope. We like it - subsidized medicine, decent health care -, the ability to support "our friends the Americans" in their foreign military adventures - you were the one complaining about the fuel cost - maybe if your taxes were reduced, it would be at a level you thought reasonable. In no way did I expect the HF item to be equal to a baldor tool grinder but when the display version is just plain horrible, I don't expect better out of the sealed box. Wow - did you expect the minimum wage shop assistant to be able to tell if it was out of true? - probably didnt even know what it was apart from reading the label on the box....and for the price, maybe it did need some work. Whole groups are devoted to fixing the faults in Chinese machine tools - American ingenuity will find a way, surely. And yes, I do know I am lucky to live in the United States. I have had the opportunity to live in parts of Europe and Asia along with visiting Canada and Mexico and I'll take this country every time. Wes No worries - glad your happy with your country (as you should be), I must have misread your post as a complaint about how things were not working too well in this instance... |
Trip to harbor freight (grinding)
On Fri, 26 Oct 2007 19:24:36 -0400, Wes wrote:
"Harold and Susan Vordos" wrote: "Wes" wrote in message ... snip------ So what grit silicon carbide metal backed cup wheel should I buy? You didn't make clear your intended application. Are you sure you want a silicon carbide wheel? Harold Carbide scraper is primary use, brazed carbide lathe bits secondary. Thanks, Wes Use the finest bonded diamond wheel you can find. You don't need to remove much material at all to refresh a scraper bit and you need to end up with a mirror finish. Stay away from the silicon carbide! regards Mark Rand RTFM |
Trip to harbor freight (grinding)
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Trip to harbor freight (grinding)
On Sat, 27 Oct 2007 16:11:52 -0400, Wes wrote:
snip Darn. I thought you had one. Oh well. I'll build my own lashed up grinder for now and keep my eyes open. Wes I like my Rockwell. There have been a couple on ebay recently, although not currently. It's configured similarly to the Baldor and usually comes on a cast pedestal. Pete Keillor |
Trip to harbor freight (grinding)
On Sat, 27 Oct 2007 16:44:25 -0600, with neither quill nor qualm, Lew
Hartswick quickly quoth: Too_Many_Tools wrote: We are the enemy. TMT No. You got that wrong. " We have met the enemy and he is us " Pogo I don't think he was quoting Pogo, Lew. I think too_many_trolls simply misspelled "enema". -- We have to fight them daily, like fleas, those many small worries about the morrow, for they sap our energies. -- Etty Hillesum |
Trip to harbor freight (grinding)
On 2007-10-27, Too_Many_Tools wrote:
On Oct 27, 2:35 pm, Ignoramus2057 wrote: For $150, you can buy a used Baldor 500 diamond grinder from a small shop that likely did not use it that much. i Not if anyone else is at the auction. The Baldor diamond grinders maintain their value. That is why the Chinese chose them as an item to copy. The same goes for Emco lathes were the model for the common Chinese lathe. It is almost a badge of honor to be chosen by the Chinese as the tool to be copied....and as they take market share from you. Around here, that's what they go for. I would prefer a used baldor to a new HF grinder, though they are reportedly pretty good. i |
Trip to harbor freight (grinding)
Gerald Miller wrote:
On Sat, 27 Oct 2007 06:22:58 -0700, wrote: **** a Duck - you Yanks are totally up yourselves. Your complaining the 149.50 tool grinder is not up to scratch.....JHC, what the **** do you want for that? - do you expect a high precision industrial quality instrument? - yeh, sure, if its a sale from the rust belt of US manufacturing, else its totally worn out....wow, $16 for 200 miles in gas cost - wish the rest of the world had it so cheap.... Mate, you well off, just too dumb to realise it..... Andrew VK3BFA. That's why we celebrate "thanksgiving". Gerry :-)} London, Canada It's why WE celebrate the 4th of July. jk |
Trip to harbor freight (grinding)
Mark Rand wrote:
Use the finest bonded diamond wheel you can find. You don't need to remove much material at all to refresh a scraper bit and you need to end up with a mirror finish. Stay away from the silicon carbide! I roughed out the radius on one of the scrapers I am making last night during break on a silicon carbide wheel at work. I wasn't impressed at all. I'll buy the diamond wheel. Thanks, Wes |
Trip to harbor freight (grinding)
"Harold and Susan Vordos" wrote:
Best yet would be a diamond, which won't chip the carbide. You'd be pretty happy with a 220 diamond, which will move carbide fast and leave a decent surface that is easily lapped to perfection. A diamond wheel should be run wet, so keep that in mind. By wet, is a steady drip okay vs a flood? The baldor and hf copies use a cup that drips on the stone or wheel. What is the difference between a resin bonded diamond and an electroplated diamond wheel? Thanks, Wes |
Trip to harbor freight (grinding)
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Trip to harbor freight (grinding)
On Oct 28, 11:37 pm, Wes wrote:
wrote: I take it that Chinese imports have not found your country? With the change over to cnc didn't that free up a lot of manual equipment? It did. The small local engineering shop is, by and large, gone. Even the BIG engineering shops are gone too. The former sites are now "Shopping Malls" with "Boutique Apartments" - Vickers-Ruwolt had a huge site , half a suburb, machinery that could make propshafts and gears for ships.....its local to me, most of the site is taken up with an IKEA store. Whoopee - putting together an IKEA chair is not the same feeling of satisfaction as building a bridge, or a ship, or a locomotive... Yes, most of the stuff here is Chinese - the X2 and X3 mills, the 9 by 20 lathe - it will be a long time before I can exceed the capabilities of these machines. The HF toolgrinder you describe - no, not enough demand, so no one imports them. Would love to have one, even with the faults you describe. The $30 DVD player, the $100 TV set - we are awash with them.....all going to landfill when they die.....any life over 3 years is a bonus, and with a 12 month warranty on them anyway there GREAT value. If you can mentally cope with the throw away attitude. The paradox here is that the Chinese are making world class gear - lets face it, they have just launched a moon shot, (you cannot make one of them with a mini-mill.), have put a man in space. Supersonic jet fighters, ICBM's, nuclear power plants, advanced semiconductors - they do it all. BUT - they are perfectly happy to make a dollar building crap for the likes of (insert store name here) who get good margins on it. And maybe the HF grinder you describe is in that category - the price screwed down so much, they couldnt/wouldnt be bothered setting it up properley...who knows? Most of the problems in the lathes and mills seem to be lack of attention to detail, lack of time spent in fitting to tolerance and can be fixed with a bit (or a lot) of work. You are probably right. Likely not a person in the store that would / could actually use some of this stuff. I think I'll apply ingenuity to building something out of the junk box. If you have the skills to do it, great - at this stage in my learning curve, I don't. In time, perhaps. And yes, thats another thing about these wonderful cheap stores - no way in a fit are they going to find, or pay, someone with enough trade skills to be able to do it properly, defect the faulty ones before they go out the door.. Exception will be the old timers who are redundant from manufacturing and trying to eke out a living till retirement. And stores don't like employing them either - they tend to have short tolerance of 30yo idiots with MBA's., and their conscience pricks them when told to sell obvious junk.... It was a bit depressing to see how much crap is sold to Americans w/o a clue from that chain of stores. The flip side is that if China is still sending stuff out like this then we still have a chance to save manufacturing here in the states. Not sure there - a whole generation has been conditioned to throw away junk at low prices - and the prevailing orthodoxy in the marketplace seems to embrace this concept. I am a consumer service tech, its my generation (ie, the over 50's) who still have the mindset of getting things repaired. Anyone younger, they bin it, go get a new one.... And whats happened to the skilled workers who used to run manufacturing, here and there in your country. Mowing lawns, low paid low skill jobs to eke out a living after being made redundant. And VERY ****ed with whats been done to their country. .Sure, you can go out and buy new precision machinery, set up a factory again. But the generational skills of trade, of attitude, of pride in workmanship that were passed down from Master to Apprentice - I fear that they have been lost. It would be very difficult to build up that skills base again. And I fear that, long term, it will be to our cost. Thank heavens people like Harold etc are computer literate and can pass on some of those skills in this forum. 73 Wes KC8SPR 73 de VK3BFA Andrew. |
Trip to harbor freight (grinding)
On Oct 27, 2:19 pm, Too_Many_Tools wrote:
Not if anyone else is at the auction. The Baldor diamond grinders maintain their value. TMT I certainly have to agree. Having been to a number of auctions in Arizona, I am amazed at the prices fetched by Baldor pedestal grinders (not even the tool grinders under discussion). I have seen Baldor 7" grinders, quite well used and missing a tool rest, go for more than $300 at large industrial auctions, for chrissakes. Of course, this same auction mentality can be seen at work on other items as well. Total lack of value calculation on the part of the bidders, when you can buy the same thing new for less than $500 on a good sale (not to mention the imported competition). BTW, I bought my Jet 8" bench grinder through Amazon(!) Great deal with free shipping. The Jet unit, in my personal experience having outfitted the shop at (former) workplace about 15 yrs. ago, is terrifically durable, and very good quality. No real plug intended, just observation -- |
Trip to harbor freight (grinding)
john wrote:
The Japanese stuff went through the same cycle in the fifties. People all talked about the stuff like the Chinese stuff is talked about today. The thing is though that a lot of the stuff is good, some of the stuff is very good, and did I say inexpensive. You just have to check the stuff out very carefuly before you buy it. I remember when 'jap crap' was the common slur for things made by the Japanese. They got there chit together and now if I see Japan on the box, I figure it is likely good stuff just based on reputation. I also don't feel bad about buying it since their people have decent standard of living so I'm not bottom feeding. The best Chinese stuff is either military or produced by firms are controlled by American, Japanese or European corporations. I suspect the Chinese goverment will crack down on crappy producers to protect their economy. Of course the Red Chinese way of enforcing edicts are a bit extream. Anyone remember their FDA chief? I bet they charged the family for the bullet. Wes |
Trip to harbor freight (grinding)
Wes wrote: Ignoramus2057 wrote: On 2007-10-27, Wes wrote: Ignoramus2057 wrote: For $150, you can buy a used Baldor 500 diamond grinder from a small shop that likely did not use it that much. i I'll take it if it can be shiped ups. You would have to go and pick it up from an auction, for this price. They are, however, shippable by UPS (without stands) and sell for about $250 on eBay. Hard to go wrong with a Baldor 500. I do not have one currently. i Darn. I thought you had one. Oh well. I'll build my own lashed up grinder for now and keep my eyes open. Wes Find one that is real noisy and get it for nothing.... put about 30 bucks worth of bearings in it and you have essentally a new grinder, or it will at least run like new one. I got a real nice pedistal grinder for nothing which was very noisy and the thru bolts were stripped holding the motor halves together. Some threaded rod and new bearings did wonders for it. The biggest problem after that was to remember to turn the thing off since it was so quiet. John |
Trip to harbor freight (grinding)
john wrote:
Find one that is real noisy and get it for nothing.... put about 30 bucks worth of bearings in it and you have essentally a new grinder, or it will at least run like new one. I'm about 130 miles from any chance of a decent auction. One of the few downsides of living out in the sticks. I do agree on noisy bearings. Replacing bearings in electric motor is generally trivial. I got a real nice pedistal grinder for nothing which was very noisy and the thru bolts were stripped holding the motor halves together. Some threaded rod and new bearings did wonders for it. The biggest problem after that was to remember to turn the thing off since it was so quiet. Sadly most grinders I've used were not that quiet but I know what you mean, I've used a few properly maintained ones. Wes |
Trip to harbor freight (grinding)
On 2007-10-28, john wrote:
I got a real nice pedistal grinder for nothing which was very noisy and the thru bolts were stripped holding the motor halves together. Some threaded rod and new bearings did wonders for it. The biggest problem after that was to remember to turn the thing off since it was so quiet. I have a Baldor grinder (regular bench kind), and it is that quiet. It keeps running for minutes after I turn it off. Very amazing. i |
Trip to harbor freight (grinding)
"Wes" wrote in message ... "Harold and Susan Vordos" wrote: Best yet would be a diamond, which won't chip the carbide. You'd be pretty happy with a 220 diamond, which will move carbide fast and leave a decent surface that is easily lapped to perfection. A diamond wheel should be run wet, so keep that in mind. By wet, is a steady drip okay vs a flood? The baldor and hf copies use a cup that drips on the stone or wheel. Flood is recommended. It not only cools, it also keeps the surface clear of contamination. If the drip isn't fast enough to keep the edge cool, thermal shock is a consideration. They're always wheels, never stones. Stones are used by hand, or in hones. That is, unless you have an old whet stone. What is the difference between a resin bonded diamond and an electroplated diamond wheel? Thanks, Wes Resinoid bonded wheels have a layer that is either 1/16" or 1/8" thick that is filled with diamond bits of the prescribed grit size. Plated wheels are just that------a thin layer of diamond that is held in place by plating----if I'm not mistaken, nickel. They work fine, but have a short life as compared to the thicker resinoid wheels. Most importantly, the resinoid bonded wheels are much kinder to the carbide. It's virtually impossible to chip carbide with such a wheel, unlike a metallic bonded wheel, not to be confused with a plated wheel. There are such wheels made for what is considered off-hand grinding of carbide. They're made the same way resinoid wheels are in that they have diamond through the matrix, again, 1/16" or 1/8" thick. My limited exposure to such a wheel left a great deal to be desired. Said another way, there's no way in hell I'd buy one. I'd choose a resinoid bonded wheel, hands down, even if I was offered a metallic bonded wheel for free, but had to pay for the resinoid bonded wheels. The difference in performance is stunning. By the way, I've been using diamond wheels for more than 50 years now. A wheel that used to cost about $600, when a dollar was still worth no less than 50 cents, is now priced @ roughly $125, thanks to modern technology. Wheels have come down well in price, in spite of the loss of buying power of the dollar. Diamond wheels are a real bargain today. Harold |
Trip to harbor freight (grinding)
"Wes" wrote in message ... Mark Rand wrote: Use the finest bonded diamond wheel you can find. You don't need to remove much material at all to refresh a scraper bit and you need to end up with a mirror finish. Stay away from the silicon carbide! I roughed out the radius on one of the scrapers I am making last night during break on a silicon carbide wheel at work. I wasn't impressed at all. I'll buy the diamond wheel. Thanks, Wes Good choice. Mark knows of what he speaks! I've always been underwhelmed by the performance of silicon carbide for grinding tungsten carbide. If you look at the edge created, it's always chipped, never smooth. How in hell is that supposed to work properly? Harold |
Trip to harbor freight (grinding)
On Sun, 28 Oct 2007 19:30:10 GMT, "Harold and Susan Vordos"
wrote: "Wes" wrote in message ... Mark Rand wrote: Use the finest bonded diamond wheel you can find. You don't need to remove much material at all to refresh a scraper bit and you need to end up with a mirror finish. Stay away from the silicon carbide! I roughed out the radius on one of the scrapers I am making last night during break on a silicon carbide wheel at work. I wasn't impressed at all. I'll buy the diamond wheel. Thanks, Wes Good choice. Mark knows of what he speaks! I've always been underwhelmed by the performance of silicon carbide for grinding tungsten carbide. If you look at the edge created, it's always chipped, never smooth. How in hell is that supposed to work properly? Harold SC is only supposed to be..in most applications..the rougher, with diamond being the finisher. Gunner "[L]iberals are afraid to state what they truly believe in, for to do so would result in even less votes than they currently receive. Their methodology is to lie about their real agenda in the hopes of regaining power, at which point they will do whatever they damn well please. The problem is they have concealed and obfuscated for so long that, as a group, they themselves are no longer sure of their goals. They are a collection of wild-eyed splinter groups, all holding a grab-bag of dreams and wishes. Some want a Socialist, secular-humanist state, others the repeal of the Second Amendment. Some want same sex/different species marriage, others want voting rights for trees, fish, coal and bugs. Some want cradle to grave care and complete subservience to the government nanny state, others want a culture that walks in lockstep and speaks only with intonations of political correctness. I view the American liberals in much the same way I view the competing factions of Islamic fundamentalists. The latter hate each other to the core, and only join forces to attack the US or Israel. The former hate themselves to the core, and only join forces to attack George Bush and conservatives." --Ron Marr |
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