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I downloaded this PDF file from the web, I don't remember where.

There's a good trick for drilling brass with any size drill, the cutting edge should have a neutral rake. On small drills just take a fine stone and run it against the cutting edge holding the stone parallel with the axis of the drill but angled so you make contact with the entire cutting edge...

If you can get your hands on a 5 gallon plastic water jug (The round type for water bubblers) you have yourself a reasonably cost effective dome. Just cut the top off the size you want. Another option (if you don't worry about lightning strikes) is a large stainless mixing bowl, I found a...

Be careful, I have a similiar version of that bolt hole reference print-out and I found a couple of mistakes in the numbers.

Allright, where the heck did I put my abacus?!

This is my re-engineer autocad file of a 3 cylinder rotary stem engine, I try to be as accurate as possible, however there is always that last minute tweek to the real thing that I may have forgot to translate back to the drawings so please don't hold it against me if I made a mistake.

I've been a machinist for 20+ years, the early CNC machines I've worked on had propriatary controls with serial port program transfers. An Okuma LB15 lathe and a Mazak Quickturn 15. Moving ahead a few years, we stuck with Mazak and sold the Okuma. Mazak changed the control to work out of Windows...

What's your theory Mr. Spock. It's life Jim, but not as we know it.

Tapping large coarse threads in tough materials can be quite difficult, if it's possible try to make the hole extra deep or even go through with it to give room for the chips to go somewhere. In my fulltime job we put threads into parts using many different methods depending on the size of...

If the blade seems to throw off too easily, check the wheels for excessive rounding or alignment issues, the JET brand saw that I have is almost identical to the Harbor Freight one. On my saw there is a setscrew adjustment for the tilt of the slave wheel, as the bearings wear the slave wheel...

There is another option, but it's a little pricey. There's a 3 jaw chuck on the market called a Buck Chuck, it's essentially a standard chuck with a floating 2 piece baseplate that has 4 set screws, once the piece is clamped into the chuck you work the 4 screws like a 4 jaw chuck to bring in...

Do you use the shaper much? We had one about that size in our High School shop, they're fun to watch run.

The shop I work for is in Ipswich MA. we have large turning capacities, I run an Integrex e-410H II that will swing 24" dia., we also have an Integrex e-1060 that'll do up to 46" dia. I think. Little Enterprises, 33 Locust Rd. The Boss's name is Scott Little

I took standard plans I found online and scaled them up 3x. I also re-engineered quite a bit to add bearings and bushings and make the engine more serviceable. The pistons are aluminum with teflon rings, the cylinders are 304 Stainless, connecting rods and center hub are Titanium with oilite...