The Home Machinist!

Their store page lists the M twin as castings and blueprints both available:

https://tiny-power.square.site/product/ ... 17?cs=true

Bill Shields wrote: ↑

Fri Oct 23, 2020 5:03 pm

track looks a bit wide.....

I agree, looks more like 4.75" to me.

This was just recently discussed in another thread I believe and the general consensus is that 25 to 30ft is the minimum turning radius for any track.

Just curious- does anyone know the original history of this design? Who was the original builder/designer?

Wow! Nice Work as always!

Dremel tool with a thin cut off blade, cut a slot and back them out with a flat headed screwdriver. I think there are some YouTube videos out there showing this method.

Excellent work! I am also always pleasantly surprised when the final casting comes out so close to the predicted size when calculating the appropriate shrinkage, the math works like a charm!

Since the degradation of the sil-fos is due to exposure and the chemical reaction to the sulphur, what if the sil-fos was “protected”? What IF the the whole boiler (fittings plugged) was copper plated, isolating the sil-fos from the sulphur containing combustion gas? Copper plating has been used on...

I think that is a pretty hard thing to estimate and I would be skeptical of any answers or advice you get unless the individual was the original builder of the engine and can tell you how often the engine was ran and for how long. Engines often change hands with little to no history known and passed...

I think its fairly easy to identify by the look of it- it tends to be built up kind of like a weld bead vs. silver solder which spreads out thin and does not build up. Is this a brand new boiler that has never been run? If so then hydro test it to 1.5x working pressure and then run it. Sil-phos only...

3d printing has become the new norm....its almost put the traditional patternmaker in the poor house.. I guess they should have paid attention to changing/disruptive technology and adapted/embraced it! Like Dick Morris I have used 3D printing extensively for sand patterns and master patterns for in...

Bill Shields wrote: ↑

Thu Sep 24, 2020 6:15 pm

Especially $20 bills

I bet $100 bills work even better!