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What a beautiful engine you built there!! Regards, Will in Everett, WA.

This little engine, and it's associated write up is fantastic! Thanks to all who had a hand in it's design, and posting it! I have been away from this site for years as life got in the way of my projects. I have a 7x12 harbor freight mini-lathe project that I am getting ready to dig out and...

OkFolks, Sorry it took me so long to get a PC up and running again for my lathe, it's been 25deg in my garage lately once I get home from work lol. I toughed it out last night and Got LinuxCNC installed. I ran through Stepconf quickly once installed, though I didn't move any motors once done...

I purchased 305oz steppers from Dave at HobbyCNC, for about $75 each. Regards, Will

If your original motor is controlled by a speed pot on the unit, you can wire in a c6 speed controller board. It takes a frequency from your cnc software and turns it to a 1-10v output voltage (to the wires that were connected to the speed pot, you measure voltage across the pot and set the...

Yes I will be posing lots of screenshots :) , I wasn't able to make any progress lastnight as my desktop crashed and I spent evening working on it instead of my LinuxCNC box... Hopefully a better night tonight! Regards, Will

I use Molasses mixed with sand to make my sand cores. I use a tube(that is slightly smaller than my rough diameter) to pack it in. then I remove it from the tube and bake it to harden it up a bit. Then I place it into my mold cavity, in the appropriate spot. When you pour your casting, the...

Outputs from LinuxCNC from Parallel Port to HobbyCNC Pro Controller Pin1: Spindle Frequency Reference Pin2: X Direction Pin3: X Step Pin6: Z Direction Pin7: Z Step Pin14: Spindle On/Off Inputs to LinuxCNC from Parallel Port From HobbyCNC Pro Controller Pin10: Min Z Limit...

Pictures of my lathe are attached. The mini-lathe is a harbor freight 7x12. I added two 305oz stepper motors, each with a helical coupling because of slop in alignments. I have mounted limit switches as well. On the headstock you can see the encoder disk I used the lathe to make for itself...

Ved, this is a great build thread! Thanks for all the pics of working parts in your lathe! Hope things go well with your cylinder bore. If you can't get the hourglass issue fixed, could you sleeve it? Regards, Will

Hello All, sorry I have been absent Had a lot of things hit at once that has kept me occupied. I will continue with my postings tonight, including what I have done to my lathe, how to get the LinuxCNC software, testing and installing it, and then I will start on setting up as well. I will...

Wow lots of responses so far! i am not starting a lathe conversion from scratch. my lathe was running on linuxcnc before my move, but i hqve not been able to find my computer that was running on it. Since i have to redo my linuxcnc setup i figured people would benifit from a walk thru from a...

Good Morning Bob, and Welcome to the Forums!! A lot of great people here with TONS of great advice, feel free to as any questions you may have. I would love to see pics of your shop space if you have any. Also, for your CNC mill conversion, what software are you using to run it? Regards...

Hello All, Since I have to start from scratch with LINUXCNC to run my lathe (believe it or not...I lost an entire computer in my move) I was wondering if anyone would like me to do a from the beginning walkthru of setting LINUXCNC up to run a minilathe. Regards, Will Riddle ...

I went out to my garage to start setting up my minilathe which has been stuffed into a corner since my move in July. I found my lathe, tooling, machinists toolboxes, tool holders etc, control cabinet...but no computer tower :fan: . I will be tearing into other spots in the garage tonight...it...

OOOHHHHH what a nice new machine you have there :) Congrats!! Regards, Will

Thanks Nick, I will adjust my pattern size accordingly. Regards, Will

Good morning all, I am about to start making the split pattern for my engine block. I know that there is shrinkage, and that I should oversize the pattern. The question is how much should I oversize the pattern to compensate for this? I have been reading the plans for days now and think I...

I have to share this with you all...I just finished talking with my boss and found this out. I build custom industrial control panels for a living. We just finished re-working the control circuits for a large manual lathe, as they are ordered from out of country and don't meet UL standards for...

Vince, Thanks for the link, turns out that link has the same pic I found on the net for the casting pattern above, It's on the page for the engine block. The rest of the build pages there contain a wealth of information that I am sure will help me in my build!! Regards, Will Riddle...