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Hi, SWMBO gave me a surprise Prusa I3 Pro W DIY 3d printer kit for Christmas, which we have built. One of the A4988 stepper motor controllers is NAFF, but a replacement should arrive soon.
I was thinking of printing a bahnitov mask for my TS80APO. Has anyone done this?
Should I use ABS or PLA?
I have installed Blender, any one else using this?
I want to check the accuracy of the autofocus routine I use on my 12" RC and a Bahtinov mask seems like a pretty straightforward way of doing this. I decided to try to design and 3D print a mask despite only having a 230x150x140 print volume and the outer diameter of the mask needing to be in the region of 375mm.
I used the Bahtinov Generator at Astrojargon to generate a drwing of the mask in SVG format then imported that into Fusion 3D as a basis for the final product which I would print 2mm thick in PLA plastic. I added the various bits to the basic mask model to enable me to attach the mask to the front of the Truss tube RC. I then split the mask into 4 quadrants and made some minor adjustments to make the quadrants fit on the 3D print bed, adding some holes that would be used to mate with pins on the external supports that would enable me to assemble the 4 quadrants into a usable mask.
The short video here shows one of the quadrants mid-print on the Flashforge Dreamer:
This is the front view of the assembled mask
and here is a rear view showing the large pins that are inserted into holes in the Secondary support ring of the truss tube - you can see how the quadrants are fixed together using the push fit pins (easy to design since Fusion 3D makes it simple to apply a draft to extruded features).
and finally the mask in place on the RC
All in all, I think it turned out better than I expected.