The Steamboating Forum

Dear TahoeSteam! I really apologise for nkt being able to answer you question in a timely manner. I didn't live in my city for some time, and was busy.

Great to see you building all these parts that are seriously large as well as beautifully made.

The contrast with what I am doing now is so extreme. I have been learning to use 3D CAD (OnShape Free) so that I can draw the parts for a small monotube boiler casing. This will be 350mm long by 340 wide and 380 tall. I have finished drawing the parts and have moved to doing the assembly. This software allows measurement down to 1/100mm so I have been 'tweeking' postions and re-adjusting holes in a quest for a sort of 'perfection' in assembly. My original drawings (2D) were drawn to the nearest MM but the laser cut and bend companies did not like that and sent me away to 'do it properly'. However, despite our differences in scale I suspect that you too are working to 1/100mm by the lookof it.

Best wishes

Pete

Dear Pete! I will reply on you question a little bit later. Kindly find several photos attached.

I hand to make the roll mold on a 10-inch lathe in my good friend workshop.The copper bottoms (covers) of the condenser were pressed out by my friend on a lathe lathe - 20 inches. I don t hav such a big machine. For normal operation of the condenser, a high-power water pump will be required, more than 100 liters of water per minute.

Dear Pete! I have to work on machines whose accuracy is not more than 0,025-0,03 mm. Accuracy 0, 01 mm. achieved only on the most critical parts - crankshaft diameter, cylinder diameter, diameter piston road, etc. i don t use the 3D CAD (On Shape Free) program yet, I m just about to learn it.Here, where I live,laser work is carried out on thin sheets of metal. So I have to mill. Here are some photos of the final work on the car frame. there was a slight inaccuracy in the design that had to be corrected. Ingvar.

Photos of the final work on the engine frame

Hi Ingvar

Thanks for the comments. It has occurred to me that if you are going to learn OnShape then some YouTube videos could help. However some are terrible. I was referred to a short series by a publisher going under the name of Airwick. He has done a good one on the unusual but excellent Mate Connectors which I believe are unique to Onshape. These Mates are principally about attaching a part into an assembly, but they do have other uses including at the Sketching stage. The first video that I watched was here:
[https://www.youtube.com/watch?v=-BuqWiO ... el=Airwick] He explains the diferences between the different types of Mate Connector. Unfortunately, they are all in English.

There is a course for beginners called "OnShape in 100 days" posted up by a young American chap. He has shown no sign of being Teacher Trained in the way he presents the material, but the vieos are short and tend to focus on a single topic which is good when you are starting out. If you should decide to follow this series, let me know as I have some of the 2D drawings with dimensions that he uses. Getting hold of them took a little time so getting them from me would be quicker. The other problem with the series is that everything is measured in Inches, a part of the Imperial system that i gave up a long time ago.

Best wishes

Pete

Hello Pete! Thank you for the information. Bat at the moment I need to master the Linux CNC program. A year and a half ago I purchased an AG-400 CNC machine? a photo of which find attached.

Hello Pete! The Linux CNC program is already installed on this machine? it is simple and I can learn it quickly. I*ve been putting the machine in order for a year. I hope to show you photos of its work soon.

Hello Pete! The Linux CNC program is already installed on this machine? it is simple and I can learn it quickly. I*ve been putting the machine in order for a year. I hope to show you photos of its work soon.