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  • Originally posted by Boostinjdm
    The MT3 was a freebie from a friend. I was going to make a smaller center drill holder, but it was too damn hard to drill. Plan B.... I cut a spot in the center of the taper so I could grab it in the chuck. Then cut it down to fit the bearings..... The finish in the pic is as machined. No emery or scotch bright was used. I really like my new TPG tooling....
    Yeah, that's the stuff I was looking for.

    Thanks!
    Chris

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    • QCTP Drill Backup

      I was reading in another thread how the poster had trouble with a QCTP rotating when using it to hold a drill. I had the same problem as well as the cross slide moving back and forth from screw backlash, and came up the a backstop that will stop this. The photos should be self explanatory. The boring bar holder has an 1 1/4" ID hole so I used a 1 1/4" X 3 MT sleeve which happens to be just long enough to go through the hole bored in the backstop to hold it all together. The backstop is bolted to the holes where a follower rest would be. When it's all tightened up it is very rigid. As you can see, it can also be used as a turret holder.







      TS

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      • Nice Solution !

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        • Double the number of casters?



          I am wondering if one could double the number of wheels to increase the weight capacity, thus providing larger weight capacity at a lower cost.

          The machinery I have to move weighs in at 6000# to 8000#.

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          • Check out the casters found on heavy dumpsters, they're real beasties! They're rather large in diameter, so provisions, like outrigger mounting would have to be made to keep the center of gravity low.

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            • Wheel dresser for bench grinder

              Whipped this up. Cheap diamond point from enco...threaded it for 3/8-24, made a knurled jamb nut. I squared up the tool rest on the mill...it references off of the back of the tool rest...just guide with one hand and feed with the other...works much better than the serrated wheel things..

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              • lbhsbz nice job on the dresser but a diamond should always trail the wheel, in other words your diamond should tip down about 5° to 15° from the center line of the wheel.

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                • I often need to round the edges of parts like the one pictured to fit into a milled pocket.

                  I replaced the stock tool rest with this replaceable/adjustable rest and installed this rig. The aluminum block can slide fore and aft as the grinding progresses or to accomodate different dimensions of workpiece and can be locked in place.
                  The pivot pins can be changed depending on the hole size in the workpiece and are locked in place via a thumbscrew.



                  John

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                  • Originally posted by ZINOM
                    I often need to round the edges of parts like the one pictured to fit into a milled pocket.

                    John
                    Well, now I know what my next project is!

                    Sure beats my method of marking a circle around the hole, milling a dozen little flats, then blending them with a grinder.

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                    • Originally posted by duckman
                      lbhsbz nice job on the dresser but a diamond should always trail the wheel, in other words your diamond should tip down about 5° to 15° from the center line of the wheel.
                      Good to know...I'll have to rework it a bit.

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                      • ZINOM: Can you post a picture to show how your grinding rest is made and attached? Thanks.
                        Jim

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                        • Speaking of grinders and various attachments, has anyone added a thin cut-off wheel to one and if so, what kind of a rest did you add? I have a spare 8", 3,450rpm grinder and some 8" cut-off wheels (discs) with a 1.25" centre hole that fit my surface grinder that I want to put on this spare bench grinder to use with a tool rest to shorten bolts/screws as needed. I'm thinking of a block that is tapped to fit all the common thread sizes which slides on an alignment glide into the cut-off wheel. Maybe someone has already built one? Cheers, Bill

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                          • This is a shot of the mount...it's a bar mounted to the bench with the set-up mounted on a section of angle iron.

                            There is some wiggle room in the top holes (where the angle connects to the bar) so the angle can slide up or down a bit and the bar has other mounting holes.



                            John

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                            • Nightshift a swing table might work for you if you got room.




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                              • ZINOM; That looks like a substantial rest. I think I can make it so it will tilt and swivel. The sliding block might be good for some other applications, maybe a pusher screw in back of it would allow controlled advance to the wheel.

                                Mine will have to wait till the woodworking is done, doing Santa projects now, then need to build an extension for my computer desk. I'll post if I get anything done with the grinder.
                                Jim

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