My CNC is identical to the OX cnc, and on a friends recommendation I got this spindle from amazon, and I honestly can't get it to run a job more demanding than a text trace. I've been trying to run a job for a while and the spindle/bit keeps getting caught (and stopped) in the material, until the motors move it a little further, only to seriously torque the gantry plate, then having the bit caught and stopped again. I'm using this Amana bit and imported the tool file from the website. The material I'm cutting into is Poplar wood Is the spindle just too gutless for what I'm asking?
This sounds like a major case of user error, not the tools being used. Why are you trying to cut with a 3/4" tool? Not even entry level industrial machines do that. That's also not the correct tool for CNC work at all, beyond surfacing of wood. What material are you trying to cut? What is the purpose of the cut? What parameters are you trying to operate at?
I'm trying to cut Poplar wood, using the paths and parameters shown in the images. The 3/4" is never entirely engaged using an adaptive cut, and it's not a surfacing tool, it's a bowl cutter.
DOC? Stepover? There isn't anything for scale in that screenshot to make much of a guess. 1/4" DOC with a 1/4" stepover, two passes with a finishing pass? As for the tool being a radiused tool, have you ever taken lug nuts off with a screwdriver? No, you use a breaker bar. The same thing applies. And no, it's not a surfacing tool, but I mentioned that specifically because people use larger diameter router bits purely for surfacing. This is a very light load that covers a lot of area quickly. Even when ignoring the cutting parameters, it's still entirely the wrong tool. You should be looking at a 1/4" 2/3 flute for material removal and bottom surfacing, and a 1/4" ball nose for the inner fillets. Router bits and end mills are made for two different purposes. Unlike end mills, router bits do not clear material. Straight cut tools tend to be OK for shallow work, but are really made for open cuts.
Yeah a 500W spindle should have no problem with a 4x8" poplar tray. You're asking too much of the bit. Two flute spiral flute is a better option to help pull material upwards, with air or vacuum to remove chips from the cut. Remember it has an ER11 collet for a reason though. Keep the tooling below half inch until you know where you can bend the rules, and make sure you're only using rounding bits when you've already cut out all the clearance and it just looks like a bunch of stepped rectangles. Also you're telling Fusion that you're running the spindle at 18,000rpm when those 400/500W motors top out at 12,000, so it thinks you're removing way more material than you are. Try re-running it just dropping the 18000 to 12000 and see what happens.
