Hi,
I’m in the process of deconstructing my old Z Axis in order to install the HDZ4 upgrade.
And no matter what I tried: I can’t unscrew the spindle holder. Those two innocent screws remain tight whatever I do. Any suggestions? Of course I’ve already stripped the screw heads (remember: I’m supposed to be re-using them 
).
Ideas, anyone?
Thanks,
Christoph
When I’ve found a BHCS or SHCS begins to slip, I’ve always gone for better-quality/better-fitting hex keys, so see if a PB Swiss tool will work?
That said, my preference for an HDZ is to use an HD Spindle Mount:
https://shop.carbide3d.com/products/shapeoko-hd-65mm-spindle-mount
Photo showing the current state of things?
That’s a viable option, nice. But before I shell out another 100+ €: what about just flexing the screwheads off? I’ve got nothing to lose at tthis point…
Maybe apply some heat? Might be that threadlock was applied.
Or just use an EZ out?
I had exactly the same problem recently with a bolt on my bicycle. I was able to clamp a Vise-Grip onto the head long enough to break it loose…
EZ out? The shampoo for cats and dogs for de-shedding??
Christoph
I’ll give it a go, thanks!
Christoph
There’s not much (if anything at all) to get a grip on. These are rounded off flat head screw…
I’ll try an extractor…
Thanks all!
Christoph
Look at the tip on the bit from the photo it looks like the center of the tip is out past the teeth on the bit. Grind it flat then tap it into the screws. if you have one of the old time impact nut driver you can use that to bust the screws lose. This is the tool I’m talking about. its a hold down and turn then strike it with a hammer.
Anthony
If you can get the Torx in tight and seated I would use an impact driver to break them loose. Most time the accelerated impact will release the thread tension much faster than using your hands.
My screw was actually a button-head also, but my Vise-Grip jaw serrations are really sharp right to the edge and I was able to grab/mangle the screw head enough to put some torque on it… 
I hope that your own screw extraction goes well also.
Use a dremel and thin cutting wheel. Cut deep slot. Use the largest flat head screwdriver and make it loosen.
I’ve drilled many of those heads off with a good quality bit. Just use a bit a little bigger than the torx size wrench.
