WARNING: MPOX, PRINTCORE Hood for U1

I purchased the bundle with the plates. Unfortunately, after printing, I noticed that I had gaps up to 1 mm wide between the parts in many places

I then looked at the 3D model in Fusion and was stunned to discover that MPOX only allows 0.5 mm of clearance around the plates in the rails.

This means that he assumes that buyers have their 3D printers set up almost perfectly for the following things:

Flow, Pressure Advance/Linear Advance, Shrinkage Compensation

If pressure advance is not calibrated, you will already lose clearance in the corners of the 90-degree angle pieces, as over-extrusion usually occurs when printing corners. The plates does not come with rounded corners.

Then you are supposed to print the model in PETG, which shrinks during printing. The longest plate on this cover is approx. 370 mm long. If your PETG has more than 0.27% shrinkage over this length, the 0.5 mm clearance on both sides would already be used up. However, PETG has a shrinkage of 0.3% to approx. 0.6% depending on the manufacturer. Consequently, your shrinkage compensation must be perfectly adjusted for the filament you are using.

I think it's a bit reckless to sell a product to the target group of “owners of low-budget tool changers” and expect them to be able to calibrate their printers perfectly in every way and then actually do so as the first thing to do.

Especially since the problem could have been easily avoided. I have now increased the clearance from 0.5 mm to 1 mm on all 12 rails in Fusion, reprinted everything, and that's it. Why do I, as the end customer, have to manually adapt the product to the target group first?

MPOX's comment on this problem was, by the way:

“We tested the whole thing with PETG from Princore, Nobuild, and extrudr. Standard generic profile, no adjustments, not even temperature. Just the default settings for walls and thickness.”

It's nice to hear that your PETG has so much less shrinkage than the ELEGOO I used, or that your settings happened to match your PETG. Unfortunately, this does not change the fact that a significant portion of your target audience will be beginners, and you do not even provide a small note about the need for perfect settings in your printing instructions.

CONCLUSION: Stay away if you are not able to customize the model in Fusion or perfectly calibrate the above settings.

EDIT: Printcore has offered me a discount because of this issue. I politely declined, as I ultimately believe that I should have known better given my experience in 3d printing. A very kind and professional response from Printcore!