It has been a handy machine, and I've made a few upgrades over the past years and forgot to update here.
The single most useful change has been adding X + dual Y mechanical limit switches and a hall effect sensor z-limit switch. They aren't perfect and sometimes re-homing is off by almost 1mm (usually less), but it works well enough most of the time and is especially helpful recovering when I need to e-stop.
I also added a z-axis connectivity test to zero the z-axis with a touch-off (or x/y if cutting metal) - this has been super helpful, and I'm surprised to have seen some people say they are not useful.
Next, the rotary tool needed to go... I use the tool too much for it to live in the machine. Also the runout is pretty bad (forgot to measure), and limiting myself to 1/8" bits/mills was a pain. So, the last job of the rotary tool was to mill holes for the new spindle to mount:
![](https://cdn.hackaday.io/images/2144601708213301052.jpg)
Now it can make faster and cleaner cuts in wood. (working on a doll "sets" - a window in this case)
It is a big improvement in noise over the rotary tool as well. Especially at lower RPMs (5k-8k)
I opted for slightly more expensive brushless ER11 spindle to theoretically get better torque at lower speeds than a brushed motor. I do wonder if I should have gone with ER16 instead of ER11 though.
And with ever growing wires with limit switches and brushless motor, it's time to add cable guides and some wiring terminals...
![](https://cdn.hackaday.io/images/8433341708213858694.jpg)
Really it was a mistake to not to cable guides and the wiring terminals from the beginning - it's a very worthwhile quality of life improvement.
It then became clear I need a better way of mounting things than tape or staple gun, so I build a spoil board from scrap lumber with tracks for clamps.
![](https://cdn.hackaday.io/images/3382101708215243531.jpg)
The clamps are too thick for the gantry to clear, ooops. Maybe a future iteration will raise the gantry height (but that would also require making the z-axis more rigid, and the Z+Y axiis are very good with the current configuration.)
Still to come? I bought a light for the spindle, but it causes the controller to brown-out. So power supply needs an upgrade before that. That will be a near-term upgrade.
The there is still pitch wiggle problems, so the new spindle works great even on aluminum moving along X, but has terrible chatter along Y on tougher materials. Which it was never intended for, but I find myself wanting to cut more often. (I also wonder if I should just get a Carvera for that.)
I also experimented with a laser pointer for alignment, but I think I need to experiment with that more.
Ironically, the costume props I built this for I never made and only did one foam project. It mostly gets used for wood and some plastic.
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