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John: I currently own one of these models which I bought some 18 years ago at the Florida Flywheelers Swap Meet. Additionally, some 10 years ago I actually saw one of these engines running at an engine show at Lafayette, Indiana. This gentleman spoke of spending several years learning how...

Sir, This is really bad that your computer crashed and you lost access to your files. This is truly a loss for you, but in a way for the many people that have watched over the years your building of these creative and interesting model engines. Hence, I don’t want to tell you what to do...

I hope that you had a good vacation. Now that you’re back, thanks for posting a video of your modified mini-mill. This setup has much potential for CNC of small metal hobby parts without too much expense. Hence, I’m interested knowing more of you system design. An overall schematic...

Fillet radius?

This is a significant achievement. If you’re willing, please tell us more of how you made and configured this modified mini-mill. It appears that you have mounted an optical chopper/counter on the spindle of the mill, but is the spindle drive also a stepping motor? How do you synchronize the...

Sir, Disclaimer: The following in an opinion. I watched your video panel #69 of pouring molten Al . . . massive and intense gas formation begins immediately upon Al pouring; gas is coming from combusting sprue and then from the PLA. To reduce the formation of gas, need to reduce the mass that...

What is the silver coating at the end? ¿Cuál es el recubrimiento de plata al final?

Vederstein, Which of the Rudy Kouhoupt's books are you referring for this project? I’d like to purchase my own copy of this book.

Luc, Thank you for starting this thread topic.

I too downloaded issue #37 this evening. "Model Engine Builder Issue # 37 is ready to download From Editor [email protected]"

kvom, Thank you for your post #21. Specifically, the showing of tabs to fixture five parts for CNC milling from a plate. It is good for me to see that this technique really works. Some years ago I saw this fixturing method used to make a model engine flywheel from an aluminum plate...

Kvom, Thank you for post #6 answering my questions on tab fixturing.

I appreciate your posting how you’re building your clock . . . I learn so much form following such build-projects on HMEM. One of your post states, “CAM program provides 3 small "tabs",” were used to fixture part for CNC machining. I’d like to learn more about this type of tab-fixturing if...

Are there to be bearings for the crankshaft in the two support plates? I’m missing something; OD of shafts is 0.3745" and ID in support plates is 0.438". I look at your assembly photos and I cannot tell if there are bearing-bushings or not.