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#1
Posted to rec.woodworking
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Bench Grinder(slow speed)
Any decent choices I'm overlooking besides Delta's 8" variable speed
(1725-3450) bench grinder (Model #GR450). I'd buy this one one blind except the reviews I read were sort of disappointing. I believe I want the slow speed option to help me avoid burning anything up. Bill |
#2
Posted to rec.woodworking
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Bench Grinder(slow speed)
On 4 Mar, 15:54, Bill wrote:
Any decent choices What's a "slow speed" ? Half-speed of the usual fast (same mech, differently wound motor), or else a worm-geared 10" diameter wet wheel? I'm using a horribly cheap geared wet wheel for HSS lathe tools. Crude, but does the job. So much cheaper than the other alternatives for wood turning. Cabinetry tools I do by hand, or sometimes with an angle grinder (tool held in a vice!) for resurrections and rough shapings. |
#3
Posted to rec.woodworking
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Bench Grinder(slow speed)
"Bill" wrote in message ... Any decent choices I'm overlooking besides Delta's 8" variable speed (1725-3450) bench grinder (Model #GR450). I'd buy this one one blind except the reviews I read were sort of disappointing. I believe I want the slow speed option to help me avoid burning anything up. Bill I've had the 6" model for about a year and a half and it's been working fine for me. The tool rests aren't too bad - at least they have machined surfaces instead of being just stamped steel - and it comes with reasonably decent wheels. It's worth it to me just for the tool-less wheel changing feature alone. Tom |
#4
Posted to rec.woodworking
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Bench Grinder(slow speed)
Don't know a thing about them 'cept that I think Woodcraft has some
brand on sale right now. On Mar 4, 7:54*am, Bill wrote: Any decent choices I'm overlooking besides Delta's 8" variable speed (1725-3450) bench grinder (Model #GR450). *I'd buy this one one blind except the reviews I read were sort of disappointing. *I believe I want the slow speed option to help me avoid burning anything up. Bill |
#5
Posted to rec.woodworking
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Bench Grinder(slow speed)
Andy Dingley wrote:
On 4 Mar, 15:54, Bill wrote: Any decent choices What's a "slow speed" ? Half-speed of the usual fast (same mech, differently wound motor), or else a worm-geared 10" diameter wet wheel? I'm using a horribly cheap geared wet wheel for HSS lathe tools. Crude, but does the job. So much cheaper than the other alternatives for wood turning. Cabinetry tools I do by hand, or sometimes with an angle grinder (tool held in a vice!) for resurrections and rough shapings. Andy, My "biggest task" for the grinder, is to put a 3" camber on a plane iron. Any thoughts on how you would you approach that sharpening task? I guess I should learn what types of vices may be helpful with this. I hadn't considered using one up to now. Thanks, Bill |
#6
Posted to rec.woodworking
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Bench Grinder(slow speed)
Bill wrote:
Andy Dingley wrote: On 4 Mar, 15:54, Bill wrote: Any decent choices What's a "slow speed" ? Half-speed of the usual fast (same mech, differently wound motor), or else a worm-geared 10" diameter wet wheel? I'm using a horribly cheap geared wet wheel for HSS lathe tools. Crude, but does the job. So much cheaper than the other alternatives for wood turning. Cabinetry tools I do by hand, or sometimes with an angle grinder (tool held in a vice!) for resurrections and rough shapings. Andy, My "biggest task" for the grinder, is to put a 3" camber on a plane iron. Intuitively, it seems that the way to do this is to: 1) Scribe the right arc on the back of the plane 2) Grind to the arc, or almost to it, at 90 degrees 3) Grind a "crown" (is that the right word?) to the edge by raising the angle of the tool rests. I've read that one should grind "into", rather than "out of" the metal so that the iron can absorb part of the heat. I can't seem to decide in (3) if the angle/crown should vary as one goes around the arc and the best way to accomplish this. Bill |
#7
Posted to rec.woodworking
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Bench Grinder(slow speed)
On Mar 4, 10:54*am, Bill wrote:
Any decent choices I'm overlooking besides Delta's 8" variable speed (1725-3450) bench grinder (Model #GR450). *I'd buy this one one blind except the reviews I read were sort of disappointing. *I believe I want the slow speed option to help me avoid burning anything up. Bill The wheel is important, too. Coarse, friable bond, white vitrified aluminum oxide cuts fast and cool, because the dull grains fall off under pressure, making the wheel somewhat self-dressing. Cheap grinders probably need a tool rest upgrade. The Veritas works fine, but you can make your own easily if you're cheap. |
#8
Posted to rec.woodworking
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Bench Grinder(slow speed)
"Father Haskell" wrote in message news:6f4c6202-b8f3-4eed-a9f5- Coarse, friable bond, white vitrified aluminum oxide... I had to go back and write that down slowly!!! : ) Thanks, Bill |
#9
Posted to rec.woodworking
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Bench Grinder(slow speed)
"Bill" wrote in message ... "Father Haskell" wrote in message news:6f4c6202-b8f3-4eed-a9f5- Coarse, friable bond, white vitrified aluminum oxide... I had to go back and write that down slowly!!! : ) Thanks, Bill The Delta grinder comes with one of those. |
#10
Posted to rec.woodworking
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Bench Grinder(slow speed)
"CW" wrote in message m... "Bill" wrote in message ... "Father Haskell" wrote in message news:6f4c6202-b8f3-4eed-a9f5- Coarse, friable bond, white vitrified aluminum oxide... I had to go back and write that down slowly!!! : ) Thanks, Bill The Delta grinder comes with one of those. Yes, as you may know Lowes seems to be clearing Delta out (and replacing with Porter-Cable goods). I may drive to a few stores and see if I can find the GR450--maybe even at a clearance price. I found out tonight that my closest store has already cleared this model out. Bill |
#11
Posted to rec.woodworking
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Bench Grinder(slow speed)
You want to sharpen tools?
ITEM 2485-0VGA $40 @ H/F. Lew |
#12
Posted to rec.woodworking
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Bench Grinder(slow speed)
Lew Hodgett wrote:
You want to sharpen tools? ITEM 2485-0VGA $40 @ H/F. Lew I thought a belt-sander would leave one with a concave rather than a convex bevel, no? Might be hard to hone decent micro-bevels after sharpening with it? Admittedly, the price is right. Best, Bill |
#13
Posted to rec.woodworking
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Bench Grinder(slow speed)
Bill wrote:
Lew Hodgett wrote: You want to sharpen tools? ITEM 2485-0VGA $40 @ H/F. Lew I thought a belt-sander would leave one with a concave rather than a convex bevel, no? Might be hard to hone decent micro-bevels after sharpening with it? Admittedly, the price is right. Best, Bill Hmm. The belt-sander/sharpener might work pretty well on a high-cambered iron. Decisions... Bill |
#14
Posted to rec.woodworking
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Bench Grinder(slow speed)
Bill wrote:
Any decent choices I'm overlooking besides Delta's 8" variable speed (1725-3450) bench grinder (Model #GR450). I'd buy this one one blind except the reviews I read were sort of disappointing. I believe I want the slow speed option to help me avoid burning anything up. I have that grinder, and like it. I use it for putting initial grinds on plane blades, chisels and lathe tool sharpening. Out of the box you may be initially disappointed though. When I fired mine up the first time, it practically shook everything off the bench. The fix for this was to use the Oneway balancing system to get the wheels balanced properly. |
#15
Posted to rec.woodworking
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Bench Grinder(slow speed)
On Thu, 04 Mar 2010 10:54:35 -0500, Bill
wrote: Any decent choices I'm overlooking besides Delta's 8" variable speed (1725-3450) bench grinder (Model #GR450). I'd buy this one one blind except the reviews I read were sort of disappointing. I believe I want the slow speed option to help me avoid burning anything up. Bill I bought the slow-speed grinder at Woodcraft. Believe me, you do not want this one, it vibrates a lot. I returned it. |
#16
Posted to rec.woodworking
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Bench Grinder(slow speed)
On Mar 5, 5:48*pm, Phisherman wrote:
On Thu, 04 Mar 2010 10:54:35 -0500, Bill wrote: Any decent choices I'm overlooking besides Delta's 8" variable speed (1725-3450) bench grinder (Model #GR450). *I'd buy this one one blind except the reviews I read were sort of disappointing. *I believe I want the slow speed option to help me avoid burning anything up. Bill I bought the slow-speed grinder at Woodcraft. *Believe me, you do not want this one, it vibrates a lot. *I returned it. I have the 1725 rpm grinder from Woodcraft. 8". Works fine. Comes with 2 white oxide grindng wheels so no need to buy any. |
#17
Posted to rec.woodworking
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Bench Grinder(slow speed)
"Michael Faurot" wrote in message ... Bill wrote: Any decent choices I'm overlooking besides Delta's 8" variable speed (1725-3450) bench grinder (Model #GR450). I'd buy this one one blind except the reviews I read were sort of disappointing. I believe I want the slow speed option to help me avoid burning anything up. I have that grinder, and like it. I use it for putting initial grinds on plane blades, chisels and lathe tool sharpening. I read your message and took it as a prompt. I went out and found "one left" at my second closest Lowes store--my usual store had already cleared them out. For $118, I don't think it has competition. I didn't like the tool rests on the new Porter-Cable model because they have "fixed positions", also the Delta unit is 5 Amps, instead of 4 Amps for the Porter Cable. I suspect this unit will last me a long while. I will look into the Oneway balancing system if necessary (thanks for the suggestion!). On the way home I was thinking about how I was going to rationalize my purchase of this tool to you folks... and when I stopped to realize what I was thinking it made me laugh! I hope you don't mind that I splurged a little! ; ) Bill Out of the box you may be initially disappointed though. When I fired mine up the first time, it practically shook everything off the bench. The fix for this was to use the Oneway balancing system to get the wheels balanced properly. |
#18
Posted to rec.woodworking
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Bench Grinder(slow speed)
On 4 Mar, 17:17, Bill wrote:
My "biggest task" for the grinder, is to put a 3" camber on a plane iron. Any thoughts on how you would you approach that sharpening task? Japanese 250 grit waterstone. It has quite an appetite 8-) Failing that, the big wet wheel. I just don't get these "half speed" white & pink wheel grinders. They're probably great for HSS and turning tools, but for something like a plane iron (thin, narrow angle, a steel that will burn easily, especially if laminated) they're still going to be too fast & too hot. |
#19
Posted to rec.woodworking
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Bench Grinder(slow speed)
On 3/6/2010 4:41 AM, Andy Dingley wrote:
On 4 Mar, 17:17, wrote: My "biggest task" for the grinder, is to put a 3" camber on a plane iron. Any thoughts on how you would you approach that sharpening task? Japanese 250 grit waterstone. It has quite an appetite 8-) Failing that, the big wet wheel. I just don't get these "half speed" white& pink wheel grinders. They're probably great for HSS and turning tools, but for something like a plane iron (thin, narrow angle, a steel that will burn easily, especially if laminated) they're still going to be too fast& too hot. Especially considering that you can get a usable Tormek clone for a hundred bucks from Grizzly (Harbor Fright seems to have discontinued theirs). I've got a variable-speed bench grinder but the only time I turn it on is when something needs some serious reshaping. Half-speed and friable wheels were a good solution when the alternatives were either crappy or expensive but that's no longer the case. As I get older though my approach to sharpening gets more and more pragmatic--I don't even bother getting out the stones for the kitchen knives anymore--the bottom of a coffee mug puts as good an edge on them as I need. I dunno if that's because I've had enough practice that it's easy or that I'm less finicky about having some kind of impractically perfect edge. |
#20
Posted to rec.woodworking
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Bench Grinder(slow speed)
Bill wrote:
I will look into the Oneway balancing system if necessary (thanks for the suggestion!). I got mine from Lee Valley. http://www.leevalley.com/wood/page.a...26&cat=1,43072 Here's a couple more bits about this grinder, I've learned from experience: o) Don't use regular light bulbs in the stalk light. Just about any vibration and a regular light bulb will shake the filament apart. Instead get "fan bulbs"; these are designed for ceiling fans and can withstand some vibration. o) If you get the Oneway balancing system, you'll find that you have to either modify the wheels that come with the grinder, or buy new ones. The Oneway system uses hubs, the grinding wheels are mounted in these hubs, and then the hub/wheel combo is mounted in the grinder. Since the hubs are now sitting on the grinder's shafts, the grinding wheels need to have a larger diameter center hole to fit on the hubs. The wheels that come with the Delta grinder have a plastic insert that is glued in. To get one to fit on a Oneway hub I had to drill that plastic insert out. I don't remember the diameter I had to drill it out to, but I did that with these set of bits from Harbor Freight: http://www.harborfreight.com/cpi/cta...Itemnumber=527 o) You might also need to get some washers to help with the fit of the Oneway hubs, on the grinder's shafts. o) The finish on the tool rests is a little lumpy/uneven. This is easily fixed by running a file over the rests. You'll feel this when you slide a plane blade back and forth over one. Once I got mine tweaked and dialed in, it's been great. Having the ability to vary the speed via a dial is especially nice. |
#21
Posted to rec.woodworking
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Bench Grinder(slow speed)
"Michael Faurot" wrote in message ... Bill wrote: I will look into the Oneway balancing system if necessary (thanks for the suggestion!). I got mine from Lee Valley. http://www.leevalley.com/wood/page.a...26&cat=1,43072 Here's a couple more bits about this grinder, I've learned from experience: o) Don't use regular light bulbs in the stalk light. Just about any vibration and a regular light bulb will shake the filament apart. Instead get "fan bulbs"; these are designed for ceiling fans and can withstand some vibration. o) If you get the Oneway balancing system, you'll find that you have to either modify the wheels that come with the grinder, or buy new ones. I noticed that at the link you provided, they have multiple shaft sizes. I believe the Delta grinder has 5/8" shaft. But as you point out, if the wheels that come with the grinder have inserts because they are realy cut larger, then I'll have to decide what to do. I'd be more tempted to buy the 5/8" Oneway balance system and use the wheels as they are (unless this is dangerous) or buy new wheels. Thanks, Bill |
#22
Posted to rec.woodworking
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Bench Grinder(slow speed)
On Mar 5, 8:28*pm, "
wrote: On Mar 5, 5:48*pm, Phisherman wrote: On Thu, 04 Mar 2010 10:54:35 -0500, Bill wrote: Any decent choices I'm overlooking besides Delta's 8" variable speed (1725-3450) bench grinder (Model #GR450). *I'd buy this one one blind except the reviews I read were sort of disappointing. *I believe I want the slow speed option to help me avoid burning anything up. Bill I bought the slow-speed grinder at Woodcraft. *Believe me, you do not want this one, it vibrates a lot. *I returned it. I have the 1725 rpm grinder from Woodcraft. *8". *Works fine. *Comes with 2 white oxide grindng wheels so no need to buy any. Swapped the fine wheel for a buff -- same machine takes my edges from start to finish. Replaced the tool rests with a Veritas. It's been serving me fine for 15 years. |
#23
Posted to rec.woodworking
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Bench Grinder(slow speed)
Bill wrote:
I noticed that at the link you provided, they have multiple shaft sizes. I believe the Delta grinder has 5/8" shaft. But as you point out, if the wheels that come with the grinder have inserts because they are realy cut larger, then I'll have to decide what to do. Slightly larger. They're not like the wheels you might buy new. I think most new wheels have something like a 1" center hole, and then typically come with a variety of plastic/rubber inserts to accomodate the different shaft sizes. I'd be more tempted to buy the 5/8" Oneway balance system and use the wheels as they are (unless this is dangerous) or buy new wheels. You buy the Oneway kit based upon the shaft size of the grinder--not the diameter of the grinding wheels. As I recall 5/8" sounds right for the shaft size of the Delta. Once the Oneway system is in use, the grinding wheels need to fit a larger diameter shaft (i.e., that of the hub). If you want to use the grinding wheels that come with the Delta and the Oneway hubs--you MUST bore out the centers of the wheels. |
#24
Posted to rec.woodworking
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Bench Grinder(slow speed)
Bill wrote:
IIRC, someone provided some info about how to bore out the centers of the wheels. I don't have a DP yet though, so I'm not sure where that leaves me for the time being. My recollection of drilling out the centers of the grinding wheels, is that I didn't use a drill press. I believe I used a brace[1] as I wanted to be sure nothing would get out of control on me. Once the bit started chewing on the plastic, there wasn't much material in the actual grinding wheel that needed to be removed. [1]: The brace I used is a little different than the typical one you find. Mine has four fingers in the chuck and can properly grip standard drill bits. |
#25
Posted to rec.woodworking
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Bench Grinder(slow speed)
"Michael Faurot" wrote in message ... Bill wrote: IIRC, someone provided some info about how to bore out the centers of the wheels. I don't have a DP yet though, so I'm not sure where that leaves me for the time being. My recollection of drilling out the centers of the grinding wheels, is that I didn't use a drill press. I believe I used a brace[1] as I wanted to be sure nothing would get out of control on me. Once the bit started chewing on the plastic, there wasn't much material in the actual grinding wheel that needed to be removed. [1]: The brace I used is a little different than the typical one you find. Mine has four fingers in the chuck and can properly grip standard drill bits. Michael, I can understand your wish to make sure nothing would get out of control on such an operation! I have a brace (and some of the standard auger bits that accompanied it)--I was just keeping it around for "posterity", maybe I should check if I have a 1" auger bit. That's what I would use, correct? Hmmm. maybe those (auger) bits I have are not suitable for use with this sort of material? I'll have to keep thinking about a solution to this. I wonder if Woodcraft or Rockler could assist me? Thank you, Bill |
#26
Posted to rec.woodworking
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Bench Grinder(slow speed)
"Bill" wrote in message ... "Michael Faurot" wrote in message ... Bill wrote: IIRC, someone provided some info about how to bore out the centers of the wheels. I don't have a DP yet though, so I'm not sure where that leaves me for the time being. My recollection of drilling out the centers of the grinding wheels, is that I didn't use a drill press. I believe I used a brace[1] as I wanted to be sure nothing would get out of control on me. Once the bit started chewing on the plastic, there wasn't much material in the actual grinding wheel that needed to be removed. [1]: The brace I used is a little different than the typical one you find. Mine has four fingers in the chuck and can properly grip standard drill bits. Michael, I can understand your wish to make sure nothing would get out of control on such an operation! I have a brace (and some of the standard auger bits that accompanied it)--I was just keeping it around for "posterity", maybe I should check if I have a 1" auger bit. That's what I would use, correct? You don't want to use an auger bit as it will not center on the hole. Use a regular twist bit. |
#27
Posted to rec.woodworking
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Bench Grinder(slow speed)
"CW" wrote in message m... "Bill" wrote in message ... "Michael Faurot" wrote in message ... Bill wrote: IIRC, someone provided some info about how to bore out the centers of the wheels. I don't have a DP yet though, so I'm not sure where that leaves me for the time being. My recollection of drilling out the centers of the grinding wheels, is that I didn't use a drill press. I believe I used a brace[1] as I wanted to be sure nothing would get out of control on me. Once the bit started chewing on the plastic, there wasn't much material in the actual grinding wheel that needed to be removed. [1]: The brace I used is a little different than the typical one you find. Mine has four fingers in the chuck and can properly grip standard drill bits. Michael, I can understand your wish to make sure nothing would get out of control on such an operation! I have a brace (and some of the standard auger bits that accompanied it)--I was just keeping it around for "posterity", maybe I should check if I have a 1" auger bit. That's what I would use, correct? You don't want to use an auger bit as it will not center on the hole. Use a regular twist bit. Thank you for your comment. I may need to purchase one of those regular 1" bits. I hope they have them for 3/8" drive! I'll go take a look at Sears... Bill |
#28
Posted to rec.woodworking
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Bench Grinder(slow speed)
"Bill" wrote in message ... "CW" wrote in message m... "Bill" wrote in message ... "Michael Faurot" wrote in message ... Bill wrote: IIRC, someone provided some info about how to bore out the centers of the wheels. I don't have a DP yet though, so I'm not sure where that leaves me for the time being. My recollection of drilling out the centers of the grinding wheels, is that I didn't use a drill press. I believe I used a brace[1] as I wanted to be sure nothing would get out of control on me. Once the bit started chewing on the plastic, there wasn't much material in the actual grinding wheel that needed to be removed. [1]: The brace I used is a little different than the typical one you find. Mine has four fingers in the chuck and can properly grip standard drill bits. Michael, I can understand your wish to make sure nothing would get out of control on such an operation! I have a brace (and some of the standard auger bits that accompanied it)--I was just keeping it around for "posterity", maybe I should check if I have a 1" auger bit. That's what I would use, correct? You don't want to use an auger bit as it will not center on the hole. Use a regular twist bit. Thank you for your comment. I may need to purchase one of those regular 1" bits. I hope they have them for 3/8" drive! I'll go take a look at Sears... Bill Sears has them for about $28...1/2" drive of course. I don't think I'm comfortable doing this without a drill press anyway. Maybe I can pay someone at Woodcraft to drill. Thank you, Bill |
#29
Posted to rec.woodworking
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Bench Grinder(slow speed)
If drilling - not on a lathe ? -
I'd use a cone drill that maxes out to that size. It self centers and if several steps are in action - will continue. Mine have carbide blades on a slot in the cone and does nice in high chrome steel. A twist drill won't center - as the hole is already there. It would have to be centered and the drill driven there as on a lathe. I'd be concerned to balance - Please plan on truing them up with a diamond as an unbalanced wheel can explode. Martin Bill wrote: "Bill" wrote in message ... "CW" wrote in message m... "Bill" wrote in message ... "Michael Faurot" wrote in message ... Bill wrote: IIRC, someone provided some info about how to bore out the centers of the wheels. I don't have a DP yet though, so I'm not sure where that leaves me for the time being. My recollection of drilling out the centers of the grinding wheels, is that I didn't use a drill press. I believe I used a brace[1] as I wanted to be sure nothing would get out of control on me. Once the bit started chewing on the plastic, there wasn't much material in the actual grinding wheel that needed to be removed. [1]: The brace I used is a little different than the typical one you find. Mine has four fingers in the chuck and can properly grip standard drill bits. Michael, I can understand your wish to make sure nothing would get out of control on such an operation! I have a brace (and some of the standard auger bits that accompanied it)--I was just keeping it around for "posterity", maybe I should check if I have a 1" auger bit. That's what I would use, correct? You don't want to use an auger bit as it will not center on the hole. Use a regular twist bit. Thank you for your comment. I may need to purchase one of those regular 1" bits. I hope they have them for 3/8" drive! I'll go take a look at Sears... Bill Sears has them for about $28...1/2" drive of course. I don't think I'm comfortable doing this without a drill press anyway. Maybe I can pay someone at Woodcraft to drill. Thank you, Bill |
#30
Posted to rec.woodworking
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Bench Grinder(slow speed)
Bill wrote:
I can understand your wish to make sure nothing would get out of control on such an operation! I have a brace (and some of the standard auger bits that accompanied it)--I was just keeping it around for "posterity", maybe I should check if I have a 1" auger bit. That's what I would use, correct? No, you need a twist type bit that can seat into the hole that's all ready there. I used a bit from this set, from Harbor Freight: http://www.harborfreight.com/cpi/cta...Itemnumber=527 |
#31
Posted to rec.woodworking
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Bench Grinder(slow speed)
"Michael Faurot" wrote in message ... Bill wrote: I can understand your wish to make sure nothing would get out of control on such an operation! I have a brace (and some of the standard auger bits that accompanied it)--I was just keeping it around for "posterity", maybe I should check if I have a 1" auger bit. That's what I would use, correct? No, you need a twist type bit that can seat into the hole that's all ready there. I used a bit from this set, from Harbor Freight: http://www.harborfreight.com/cpi/cta...Itemnumber=527 Thanks Michael. Did you mention earlier that you accomplished this operation with a hand drill? Best, Bill |
#32
Posted to rec.woodworking
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Bench Grinder(slow speed)
Bill wrote:
Did you mention earlier that you accomplished this operation with a hand drill? Yes, I did it with a brace. Most of the material to be removed is the plastic insert. Several turns with the brace, and most of the plastic caught on the bit and just tore out. Once the plastic came out, there was not very much material that had to be removed from the grinding wheel itself. |
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