I got my first CNC today. It was a build someone else did and sold to me. I'm pretty sure it is a HobbyCNC and as far as I can tell it is stock. It might be based on a previous version as it doesn't have the vacuum top. Came with Xylotec 3 axis controller, power supply, 3 bipolar steppers and all cabling ready to go for about $110. It has been in storage for a while so the linear bars are a little bit rusted and the thing was a mess as he used it a lot when it was running. I took it apart tonight and cleaned everything. I'm going to get some steel wool tomorrow and clean up all the metal stuffs.
My question is this. Since I have it apart should I upgrade anything or just clean it up and run it and modify later? The linear bearings look like brass bushings and the screws are all 1/4-20 standard stuff you would find at a home store. I haven't run it yet as I wanted to clean up the surface rust on the linear rails and clean up the machine generally. I probably could have it running like it is in a couple of days.