The only tell is a slight bump on the seam line of the back. It’s 0.1mm layer heights and 0.6mm thick.
Printed in TPU, I was looking for a solution like this for a future project and wanted to share it with someone.
this post was submitted on 22 Apr 2026
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Could you explain more? Is this just an experiment to see if you can line up and fuse 2 separately printed objects? Are the 2 parts different materials? I feel like I'm misunderstanding.
What I think you've done is print 1 object in TPU and then print a 2nd object, also in TPU, close enough to the 1st object such they fuse. Maybe your future plans would help me understand. I'm interested in learning about different techniques.
I had considered doing something like object fusing to create foldable objects, like print the first couple layers in TPU (for both objects as well as a connecting piece between them) and then print 2 separate objects on top of the TPU base -- think like a foldable phone case where rather than use a normal hinge, it would be an edge in TPU and the rest is PLA/PETG/whatever. Reason to do the whole base in TPU is that I thought just printing the part that connects the other 2 parts in TPU wouldn't fuse well enough and would separate with use. I've not actually done this.
So the whole process.
Print the first part, the first part has an interfacing slope which is 3d printer friendly. Which results in some stair stepping, but this time this is what we are trying to get.
Remove the first part from the print bed.
Start the second print.
Auto stop the second print after the first layer, and align it with the first print. The first print has a notch which is used to align the 2 parts.
Resume printing. The second print is design to print over air without supports, but with the first print in place it now prints on top of that and fuses the 2 parts together.
The reason I am doing this is so I can print parts which is larger than my print bed, without using fasteners or adhesive to bond them together. This method basically welds the parts together. This was just a small test print to prove the theory