#notfriday 

When I returned the spindles that exhibited the issue, I asked them to follow-up and let me know what they found and/or what the root cause was, but I never received any additional information. If they ever provide that information, I'll add it to a pinned comment. Personally, I wish that Precision Matthews would do a full QA on their Taiwanese machines before they leave their PA warehouse, BUT I will also say that I have had several issues over the years, and they have ALWAYS fully resolved those issues. They are very fair and dedicated to providing the best machines they can at the best price possible. These are complex machines with lots that can go wrong. The most important thing is to buy from a company that has proven that they will resolve issues when they do come up.

@@FunctionalPrintFriday Turned out I forgot one of the "t"'s in the email address so I tried again and they got right back to me. They had a bad batch of spindles and sent replacements to everyone who had an issue. The problem appears to have gone away. Sounds like they are a very proactive company with excellent customer service.

Yes many people are only buying the PM machines just to convert them to a high precision CNC which I plan to do for the PM-25

Saw your email as well. I wrote ya back. Check your junk folder if you don’t see it.

@@FunctionalPrintFridayjust saw this video and it’s great information, thank you for sharing. I have the same machine and I’m pretty sure I have the same exact problem. Now that you’ve solved the spindle collet taper situation, could you kindly let me know what is the run out now with real world usage? I’ve spent the majority of my time trying to tram this machine for the last 3 years. Also is there a Nod on your machine? If so how did you solve that. Greatly appreciate it if you could shed some light in my direction.

Lovin it so far. Just do it :)