Some simple Eufymake tips 3D print over print

My Eufymake UV ink printer has issues, and so does dealing with Eufymake as a company, as I have blogged, but today, let's look at it working, and doing what I ask.

I have done a few "over prints" now, where I am printing on something that exists - printing on PCBs is excellent. But this time I have a 3D print that I want to accurately over print.

So a few tips.

1. Dimensional accuracy of the 3D print. My resin printer can be very slightly out on larger prints - depends on the resin used. The models from JLC are unbelievably stable. So measure, with callipers, to check. Do not rely on the Eufymake camera.
2. Make the artwork to the correct dimensions. My example here is nice as it is a 16x12 grid of 7.5mm square blocks. Almost impossible to get wrong.
3. Add bleed to the artwork, a few mm over all edges on the most appropriate colour. For this model I copied and pasted half a block left, right, up, and down behind the image.
4. Make an outline of the image, only like 1mm or something.
5. Load the outline, centred exactly, and print on paper on the print bed.
6. Place model on the outline to align exactly.
7. Load the image, centred exactly.
8. Know the centre of the image - in my case there is a clear and exact centre.

At this point, when you snapshot, the centre of the image should be right. It is worth double checking it matches the image. Do not trust anything away from the centre - trust the printed outline. Checking the image centre helps double check you have placed on the outline.

If doing many prints the bleed ends up on the paper and gets thicker. In my case with a solid base that means print after print the placement of the image gets easier as there is a thick print line around the edge and the model slots in to place.

Indeed, I printed an outline inside the image and placed on that - an alternative would be an outline outside the image, and print a thick layer on paper with the Eufymake so as to create a positioning slot for your 3D image to slot in to place.

The results. Some happy teenagers who can tap to pay on their Netherite Ingots (whatever they are?!).

I think this has proved a good exercise. The case printing I have been working on could have a thick outer outline printed on paper to perfectly align the case before printing. So yes, good testing even on a silly thing like this.