Centroid Community CNC Support Forum

Hey everyone! I recently acquired a Dyna Myte 2400:
This seems to be a well built little machine for it's size. When it first came to me all of it's old electronics were stripped off. I fabricated some mounts for NEMA 23 motors. I also reworked a control box that I had to work with this machine. So far, so good. The only issue I have so far is the spindle is spinning faster than commanded. For example if I command 10k RPM I get 15k using a tach. Still scratching my head a bit on that one.

This spindle does have three gears on it, I have the gear ratios set in the wizard, perhaps I need to mess with those a little more.

Here's a video of the machine:

right on, thanks for posting.
Note: to see Toaster's video click on the title in the upper left (this is just an artifact of the preview code we are using as its designed for goggle photos not videos.

i put it on youtube as well.

Making some more progress:



Spindle is working, and I rigged up a coolant/IPA mister as well. I'll make some chips over the weekend. I even mounted up a small vice to it as well.

Made a few chips!



Not bad for a first cut!

Hi,

This is awesome. I'm curious what you did for programmatic spindle speed control? Also working on hacking a DM2400 but I'm very new to milling.

I used a little motor speed controller I got from Amazon. Nothing fancy, it was something that handled the 80v motor and tool 0-10 volts for a control signal.