reggielee31
New User
HiThis was a good example of how the picture in the CAD software is not the product in the real world.
I wanted the Voultar "RGBS" logo across the top of the case, and I wanted the screw holes to line up with the screw holes in the PCB. This meant that the letters and the holes occupied the same space
FDM 3D printers have big problems with this kind of shape - they can print things cut into a surface really nicely in both X and Y, but they can only print one surface cut into another surface in Y. Because the Filament is Deposited it can only stick if there is something underneath. Makes perfect sense when you watch how the printer actually works, but easy to forget in the CAD program.
This is how it looked in CAD - very nice!
This is how it looks in real life. The top holes that intersect with the letters and are set back off the surface look like a dogs breakfast
If this was a resin printer this would not be a problem, but I dont have a resin printer...
The solution is to draw a "cuff" around the top of the hole to give the the filament something to stick to. I guess I could have made this .1mm wide and manually picked it out afterwards, but I really wanted to get the tool to do the whole job - so I drew a cuff like this.
So the finished case looks like this - again it is clear that I'm no product photographerI really like the color of this filament, it's CPS2 blue. But it doesnt melt at quite the same temp as my other filaments
I printed this this at 60/195, 20% infill, .16mm layer height, no supports
This time it really is done, no more changes.
Getting nuts and bolts that are "dimensionally accurate" out of china is a massive pain. Also there is no QC and no lot number, no batch number, no serial number. So just because they have been good the last 10 times does not mean they are going to be good the 11th time. Ali at your own risk
BOM to assemble the case is
4 x M3 20mm cup head bolts - these have to be 20mm in order to engage the nut fully but not stick out the top or bottom of the case
https://www.aliexpress.com/item/4000784829771.html
4 x M3 nuts (5.5mm in diameter face to face, 2.5mm high)
https://www.aliexpress.com/item/4000602853448.html
1 x M3 10mm button head bolt
https://www.aliexpress.com/item/4000038065691.html
Can you share this 3D print file?
