Found Material is exactly right
Welded an old hydraulic cylinder and the flywheel off a lawn mower to the back of it for weight, the upright supports are from an old bed frame and the main support is an old piece of pipe. The head was part of the tractor set I just extended it so it was high enough I didn't have to bend over. All except the tractor seat was found on the property when we were cleaning up shortly after buying this place. Net investment was a few feet of welding wire..
The exhaust system was another "using what I could find laying around". Was looking for something to absorb some of the heat and adapt the Saito exhaust pipe to a hose I could run outside. The exit hole in the Fox muffler looked to be about the right size to tap for the 10mm exhaust pipe, ended up it was just about perfect.
Cut the mounting ears off the inlet and drilled what was left out as big as I could to reduce the back pressure as much as possible. At first I had a silicon pipe coupler between the muffler and the 1/2 inch plastic flex conduit but it split so I replaced it with a piece of heater hose which is holding up really well.
It's fairly quiet but still get a little exhaust in the shop, think it's comming out of he breather nipple but afraid to add any restriction in the form of another tube. It realy isn't bad but I can smell it.
Hey it works