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[DrMike]

Would not be all that difficult to make such a cutter.
Certainly no more difficult than, say, a dovetail cutter.
And while you are at it,...

[DrMike]

Actually, the Corliss Engine has 4 valves that operate in essentially the same manner as this 4-way valve, each of them can be individually tuned for...

[DrMike]

Wasn't trying to "shame" in any way, was just asking the question. This is the first of your builds I've followed, and I'm just getting used...

[DrMike]

So you are no longer interested in building a Trevithick Engine, but will be content to build something that (mostly, sort of) looks like it from the...

[DrMike]

It seems to me that the 4-way valve isn't changing just a little early, it's changing very early. Clearly changing early enough that the pressure/piston...

[DrMike]

LMS = Little Machine Shop, online hobby machine retailer
https://littlemachineshop.com/produc...90&category=13...

[DrMike]

I did mean impact driver, not hammer.
But hey, use what you’ve got.

[DrMike]

Since you still have the chuck in the R8, chuck up the largest Allen wrench you have that'll fit.
On hand on the Allen key, the other on the drawbar...

[DrMike]

Can you remove or disconnect the 4-way valve and run it in by itself?

Can you cobble together a rubber/friction connection to drive the flywheel...

[DrMike]

Heating thin galvanized steel or aluminum tread plate on the ramp shouldn't be hard, you probably can do it with something like this attached to the underside:...

[DrMike]

Go find a towel.

Below is a 15mm long piece of something that had a M10x1.25 female thread, and then was re-tapped with a M10x1.5 thread....

[DrMike]

Below are images for a M10x1.25mm female hole in a M12 male thread
0.75 mm pitch


1.00 mm pitch



1.25...

[DrMike]

Below are two images of a 10mm long M12x1.75 male thread with a M10x1.25 female thread thru the center.
Doesn't look like it's going to work....

[DrMike]

I guess it depends what you call "tools."

Was approached about 18 months ago by a local entrepreneur and inventor, wanted some...