Ok guys, I've have no real machining experience and zero experience with CNC. I've been trying to get my X4+ mill setup and this was my first CNC part. I wanted a t-slot cleaner, this is what I ended up with.
Question: I will be making many parts this size and smaller (this is 4.5 in long), what are you guys using to hold small parts down? I guess I'll be spending much of my time designing fixtures.
when i was in school we did a bunch of similar flat parts, and we used two methods, depending on the shape (we used flat stock, didnt require the face to be machined). one, mill the center section while holding your raw stock, and then clamp through the center to do your outer profile (so 2 operations basically). two, you could mill the entire piece in one operation, but use tabs so you aren't actually cutting the part out completely. this would require post-machining cleanup though.
FS: Complete Z-Axis Assembly with THK RSR15WM slide, leadscrew, stepper mount. PM for more info.