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They were down for a day. Rep;aced the server I think. Gail in NM

Teflon (PTFE) works very well for gaskets. It is doft enough that it flows into the micro grooves from machining to form a tight seal. Although Mylar, as Bogs uses, will work the finish between the parts has to be better as it does not flow as PTFE does and a higher clamping pressure is...

I am locking this thread. It is starting to degenerate into personal attacks and not discussion. Gail in NM Administrator

You always have been an optimist George. Gail in NM

Congratulations Le Zap. I have been following the construction thread. Very nice. Gail in NM

Another FWIW comment. The Math for both engines is the same and is also the same for Elmer's #387 Grasshopper engine. There are only a few critical ratios for the straight line movement and getting the valve right and then the rest is all cosmetics. I can help with that as can a lot of other...

Greg, as far as I know I don't think plans were ever published for the engine you have posted photos of. That engine is in the Craftsmanship Museum as I am sure you know. I think Rudy built that engine as a one of a kind and then built the simplified version for publication in Popular Mechanics...

Tapped faceplates worked well enough that Hardinge made several styles of them. This is a photo of a 9 ilnch diameter one copied from eBay just so I did not have to take a photo of mine. I also have a 7 inch diameter Hardrige that has a set of Tee slots plus 16 tapped holes. Each has their...

Pete, This timer mayl meet your needs. For several years I have had one of these in the shop that I use almost daily. Mine is a different color but other than that I think they are the same. Using the MIN & SEC buttons you can preset a count down time. When you touch the Start/Stop button it...

Following the #11 blade hobby knife in second place for me in utililty tools is my pair of kitchen shears. These by Farberware work great for me. They are also about the lowest costing ones around. I have four pair. One in the workshop, one in the kitchen, one in the electronics room and one I...

Because of the direction this thread has taken I am locking it to further posting. Naiveambition: If you still need assistance with your problem please feel free to start a new thread and we will try to keep it civil. Gail in NM Administrator HMEM

You are welcome Pete. All I did was add the dimension to the laser cut file. I should have thought to do that earlier and send it to you. You should see the laser cut set about Tuesday. It was mailed Yesterday. For others benefit, I cut Pete the above file out of thin styrene. If you find them...

This should get yu started Pete. Gail in NM

John, You are correct. The Oldham type coupling is far superior to the spring type that I showed.The spring type is OK for VERY MINOR misalignments and is a definite improvement over having a rigid type coupling. I showed it because it is inexpensive and very available in my world. But I agree...

Looks good. Keep us posted. You may want to consider replacing the solid coupling between the motor shaft and the lead screw with a flexible coupling at some point. It reduces any problems with shaft misalignment and keeps the motor bearing and the lead screw bearings from fighting with each...

You only need part of what you posted. I wrapped code flags agound the following so you can see it without executing it. If you you click "share" under the video it will put this part in a box and depending on what browser you are using it may copy it to your clip board so you can paste it...

You only need part of what you posted. I wrapped code flags agound the following so you can see it without executing it. If you you click "share" under the video it will put this part in a box and depending on what browser you are using it may copy it to your clip board so you can paste it...

Very nice looking and performing engine. Congrats on it being selected as POM. Gail in NM

Thanks for the education Don. The name plate etching was just for fun as I was etching some PCB boards at the time. The results were almost acceptable but not great. I don't want to hijack your thread but here are the photos of the Bridgeport control panel. First photo is of the control...

Bob, The Poison Creek Steam-up is a collection of about 25 friends who get together for a few days to a week to play with live steam Gauge 1 trains about 20 miles east of Salt Lake City, Utah. Poison Creek had numerous mines located on it in the late 1800's and was quite likely severely...