To drill plastic and other materials that tend to "grab" the drill and make it dig in too much you need to stone the cutting edge different than for metals. With a small stone stone the cutting edges parallel with the length of the drill so the cutting edge is in line with the length of the drill , not slanted back with the spiral. Another way of saying is the cutting edge needs to be perpendicular to the material to be drilled/cut so it scrapes more and doesn't "suck" in as when the edge is sharper. This will spoil the drill for normal use but will save it from digging in and possibly spoiling what you are working on. It doesn't take much to to change the way the drill cuts. Try and experiment if you can on some scrap.
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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