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My shop is small so I constantly need need to cram 5 lbs of stuff in a 2lb box space wise. While searching for drill bits I found an antique drill index. I like this style: + does not take a lot of space + shows Number and decimal equivalent + Patina is always good So I decided to 3D print some...

Lots of pressure, and very slow speed.

We got through, it was slow going, carbide did work. Thanks for all the advice.

No mag drill, I wonder what it costs to rent one?

Hmmm. That looks promising. I just watched a video of a guy drilling through HSS and Cobalt bits with one. Does not appear to be super fragile. What do I need to know?

Unfortunately it's attached to a larger machine, so a hand drill will have to be used, and that really makes it tricky. Perhaps the carbide bit I tried is not suitable, I ordered another style, and will give it a try when it arrives. I might try grinding a small carbide masonry bit, seems like...

A friend has asked me to drill a small hole about 3/16" diameter through some very hard steel that is 3/8" thick. HSS is useless, Cobalt made a 0.01" dimple, solid carbide makes a little dust but not much more. I also tried some small Dremel style grinding and diamond tip tools, they make a...

I'm a bit late to the party. Bad design like this unfortunately seems to be the rule instead of the exception. Industrial type environment, that tach should have a differential input not a single ended TTL input. The cable shielding and grounding should also be spelled out. I made a career...

That's actually pretty good, they quoted me $300ish for SKF here in Ottawa.

https://www.ebay.ca/itm/335788080289?_skw=7202&itmmeta=01JN1KKGS40X3K67SKAATVKKPF&hash=item4e2e877ca1:g:rfcAAOSwO~NnmQF2 Might be worth giving him a call 585-617-3500 Lot's to choose from, prices are up a bit. Another option...