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One of the potentially exciting quirks of many drag saws is they were two-strokes. You pull them up and bounce them against compression to start , but they are almost as likely to start in reverse as well. It gets very exciting when you drop the saw onto the log and the whole thing attempts to...

Not exactly sure which engine you are building, but I have seen people cut the groove in the a parting tool and then use JB weld to block off the bits that affect the timing. Its a little crude, but might get you by until you get better equipment. Brian

A friend has a Barco tamper that works off the same idea. the piston is inline and attached to the tamping foot and the cylinder floats. You pull the cylinder housing up and then down, the mag gets flicked and the whole thing jumps into the air.

I have been ogling Jan's creations for years, really liking his glass cylinder creations as of late. They may be a little complicated for a team build, but I'm up for the challenge myself. Guess that's my vote then Brian

I'm in. Made bases for a prior team build, but not sure I ever got all the parts from the other folks. Have both conventional and CNC machinery available to me. Brian

If its only case hardened, hopefully your finished diameter is down in the core material. Usually the case is only .030-.060 deep so if you can get under it on your inital cut you should be fine. I have machined lots of hydraulic cylinder rod which has an induction hardened layer under the...

The problem with welding a tool steel face on your ASO (anvil shaped object) is you wont have full penetration under the top plate and it wont transfer the energy thru to the base. I realize you wont be swinging a big hammer at it, but those things are basically junk. Also the horn is so blunt...

Brian, Trying to figure out how your clutch lever will work. I know on the full size Willamette I restored, the clutch lever turned a multi-start screw that moved the frictions in and out against the drum, but your drawing shows just a thru hole. Waiting to see what you have up your sleeve. Brian

I even go so far at work as to disengage the lead screw. That way if someone engages the half-nut instead of the feed, it won't take off quite so dramatically. This isnt always possible on some lathes, but is a nice feature on this big Clausing

They usually have multiple drums with different size cables on them depending on whether they were hoisting or yarding. I helped restore a 3 drum Willamette a few years back. The smallest cable was known as the haywire or straw line drum. It was drug out by hand into the brush, thru a block...

1020 is a low carbon steel, can certainly take lots of pressure cycles, based on my hydraulic experience.My only question would be the heating/cooling. It has a similar carbon content to the A53 spec you referenced, so potentially about the same ductility. The pipe spec didn't give a %...

I'm by no means a boiler expert, but I routinely use DOM tubing in various sizes for hydraulic cylinder designs with working pressures exceeding 3500 psi with a 3x minimum burst pressure. Typical yield is around 70 ksi for A513/1020 DOM with good weldability. Obviously establishing the pedigree...

DOM tubing comes in a 7" ID. It may have a heavier wall than you want, but that's easily remedied. If you know any hydraulic repair shops you might check and see if they have any old cylinder barrels you could whack a length off. It's kind of miserable stuff to machine, stringy chips and all...

That story reminds me of one I happened to witness when I was around 12 or so. I worked for a dairy farmer who decided it was time to fix a few of the barn tomcats. There was an old guy who I think had gone to veterinary school at some time in the distant past, but wasn't practicing. He did a...

Or its a double cut blade, cutting on the return stroke of the carriage,

I can attest to Bill Harris's rubber washer method. When I expanded my tubes you could actually see the finish marks left by the reamer in the tube sheet holes, transferred into the I.D. of the copper tube. I have done probably 50 tubes this way and only had one leaker which was easily fixed by...

Something else to consider if you are in the market for cordless tools, Home Depots brand Rigid has a lifetime guarantee on their batteries. I was able to swap out my last one at the local tool repair shop. I have no connection other then a satisfied customer who has thrown away his share of...

The book "So you want to build a Live Steam Locomotive" by Joseph Nelson has a chapter on whistles and the different tube lengths for notes and such. I built one at work using his design and had everyone looking when I gave it the first toot on shop air. Brian

Im assuming you may be building Bill Harris's donkey? I milled my frame channels out of solid hotroll bar stock.

I think its "Internal Wrench Head" aka socket head capscrews Brian