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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Got a new, oversize y axis gib for my bridgeport yesterday. Fitted it,
cut the notch for the gib adjusting screw, drilled for oiling, and it's working. Now working on cleaning the X axis scale, already did the Y. I'd like to paint it ( the mill), but the thought of all the dust from sanding the thick epoxy paint don't sound like fun. Anyone know if those oscillating head tools scrape paint very well? I need an excuse to give SWMBO why I need one. If I get permission, I'm gonna get the top of the line Bosch. -- Steve Walker (remove brain when replying) |
#2
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On Jan 18, 6:45*pm, Steve Walker wrote:
Got a new, oversize y axis gib for my bridgeport yesterday. Fitted it, cut the notch for the gib adjusting screw, drilled for oiling, and it's working. Now working on cleaning the X axis scale, already did the Y. I'd like to paint it ( the mill), but the thought of all the dust from sanding the thick epoxy paint don't sound like fun. Anyone know if those oscillating head tools scrape paint very well? I need an excuse to give SWMBO why I need one. If I get permission, I'm gonna get the top of the line Bosch. -- Steve Walker (remove brain when replying) If you don't like dust and want a top of the line tool made in Germany (not Mexico where Bosch makes most of their tools) suggest you check out Festool. They aren't cheap but I think they are well worth the price they charge. http://festoolusa.com/power-tools/sanders/ |
#3
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"Steve Walker" wrote in message ... Got a new, oversize y axis gib for my bridgeport yesterday. Fitted it, cut the notch for the gib adjusting screw, drilled for oiling, and it's working. Now working on cleaning the X axis scale, already did the Y. Did you blue it up and scrape away material from the middle area so that the only surface in contact is an inch or two at each end ? |
#4
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On 1/18/2013 22:56, PrecisionmachinisT wrote:
"Steve Walker" wrote in message ... Got a new, oversize y axis gib for my bridgeport yesterday. Fitted it, cut the notch for the gib adjusting screw, drilled for oiling, and it's working. Now working on cleaning the X axis scale, already did the Y. Did you blue it up and scrape away material from the middle area so that the only surface in contact is an inch or two at each end ? Damn. More work. I wondered why the one I replaced was worn only on the ends. (the gib screw slot was broken) -- Steve Walker (remove brain when replying) |
#5
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"Steve Walker" wrote in message ... On 1/18/2013 22:56, PrecisionmachinisT wrote: "Steve Walker" wrote in message ... Got a new, oversize y axis gib for my bridgeport yesterday. Fitted it, cut the notch for the gib adjusting screw, drilled for oiling, and it's working. Now working on cleaning the X axis scale, already did the Y. Did you blue it up and scrape away material from the middle area so that the only surface in contact is an inch or two at each end ? Damn. More work. I wondered why the one I replaced was worn only on the ends. (the gib screw slot was broken) Works well, just make sure you still have a good amount of contact area at both extreme ends of travel if the gib is longer than other dovetail (resulting in overhang) While this does not affect accuracy at first, it allows for the gib to be re-adjusted as it wears, due to the fact that most wear occurs at the ends; once it's finally worn down to the point where there is full contact along it's entire length, scrape away the middle area once more...if you do not, then eventually what happens is you will only have contact in the middle area, further tightening of the gib at this juncture, causing the mating dovetail to undergo excessive wear at the mid-travel area. |
#6
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On 1/19/2013 12:17, PrecisionmachinisT wrote:
"Steve Walker" wrote in message ... On 1/18/2013 22:56, PrecisionmachinisT wrote: "Steve Walker" wrote in message ... Got a new, oversize y axis gib for my bridgeport yesterday. Fitted it, cut the notch for the gib adjusting screw, drilled for oiling, and it's working. Now working on cleaning the X axis scale, already did the Y. Did you blue it up and scrape away material from the middle area so that the only surface in contact is an inch or two at each end ? Damn. More work. I wondered why the one I replaced was worn only on the ends. (the gib screw slot was broken) Works well, just make sure you still have a good amount of contact area at both extreme ends of travel if the gib is longer than other dovetail (resulting in overhang) While this does not affect accuracy at first, it allows for the gib to be re-adjusted as it wears, due to the fact that most wear occurs at the ends; once it's finally worn down to the point where there is full contact along it's entire length, scrape away the middle area once more...if you do not, then eventually what happens is you will only have contact in the middle area, further tightening of the gib at this juncture, causing the mating dovetail to undergo excessive wear at the mid-travel area. Makes a lot of sense. Thank you. -- Steve Walker (remove brain when replying) |
#7
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On Jan 19, 12:17*pm, "PrecisionmachinisT"
wrote: While this does not affect accuracy at first, it allows for the gib to be re-adjusted as it wears, due to the fact that most wear occurs at the ends; once it's finally worn down to the point where there is full contact along it's entire length, scrape away the middle area once more...if you do not, then eventually what happens is you will only have contact in the middle area, further tightening of the gib at this juncture, causing the mating dovetail to undergo excessive wear at the mid-travel area. Thanks, Dan |
#8
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On Sat, 19 Jan 2013 16:09:59 -0500, Steve Walker
wrote: On 1/19/2013 12:17, PrecisionmachinisT wrote: "Steve Walker" wrote in message ... On 1/18/2013 22:56, PrecisionmachinisT wrote: "Steve Walker" wrote in message ... Got a new, oversize y axis gib for my bridgeport yesterday. Fitted it, cut the notch for the gib adjusting screw, drilled for oiling, and it's working. Now working on cleaning the X axis scale, already did the Y. Did you blue it up and scrape away material from the middle area so that the only surface in contact is an inch or two at each end ? Damn. More work. I wondered why the one I replaced was worn only on the ends. (the gib screw slot was broken) Works well, just make sure you still have a good amount of contact area at both extreme ends of travel if the gib is longer than other dovetail (resulting in overhang) While this does not affect accuracy at first, it allows for the gib to be re-adjusted as it wears, due to the fact that most wear occurs at the ends; once it's finally worn down to the point where there is full contact along it's entire length, scrape away the middle area once more...if you do not, then eventually what happens is you will only have contact in the middle area, further tightening of the gib at this juncture, causing the mating dovetail to undergo excessive wear at the mid-travel area. Makes a lot of sense. Thank you. Which is why those of us who either fix machines, or regularly have them fixed..put the vise on the table in 3 locations. Right, Middle, Left. Using them for a year or s in each location tends to equalize the wear across the full travel over time. Gunner The methodology of the left has always been: 1. Lie 2. Repeat the lie as many times as possible 3. Have as many people repeat the lie as often as possible 4. Eventually, the uninformed believe the lie 5. The lie will then be made into some form oflaw 6. Then everyone must conform to the lie |
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