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| Slotting Tool for the Shaper |
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| madjackghengis:
--- Quote from: Darren on February 09, 2010, 05:47:11 PM ---Thanks for the suggestions, alas the slitting saw wouldn't go deep enough. What I did do was to machine the sides down somewhat and this seems to have done the trick :ddb: I also upped the screw threads to 6mm. I ground the wrong end of a blunt 6mm milling cutter to make a tip. Ground square it can be twisted in the bar to give some relief. I'm assuming as this was a milling cutter that once thrust its fine delicate teeth through steel then it will have no trouble acting as a shaping tip. All that's needed now is to weld the two bits together and shorten the milling cutter and we should be good to go ... hopefully :) --- End quote --- Darren, I've had my own problems with such a tool, and you can drill a small hole above the main reamed hole, after you weld the shank on, leaving just a slight bit of metal on the reamed side, to be taken out with a hacksaw blade, which will limber up the block after the weld tightens it up a lot. A set screw in the top end of the shank, bearing on the down slide will lock the clapper, some people use a wedge there with good results. Definitely a necessity for good clean slots. Mad Jack |
| Darren:
Thanks for the tips guys, I shall keep them in mind :thumbup: Getting the bits ready to weld I made another fixture to fit the holder to make a square hole cutter. The tip is a small HSS lathe tool held in the bar which was in turn held in the lathe. When spun at high speed I used a high speed grinder with a ball stone held against the end to form the cutting shape. For a trial run I drilled a hole in a bit of alloy stock Mounted it on the shaper and cut the round hole into a square one ... :dremel: It worked very well, and quite quickly too. But every now and again the workpiece left the room, well the vice at any rate. OK, I know it's not very secure, it was only a quick test, now I need to make a fixture to hold the workpiece properly instead of the vice. I have a sort of angleplate with a hole in it in mind .... :dremel: The keyway slotting tool, needs thinning but you get the idea |
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