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I 3D Printed on a T Shirt Then Washed It



ZappyOh: I think you should iron from the inside of the shirt, while the design is on the outside.
That way, you start melting the design from the bottom, and make it more liquid where it contacts the fabric. Should give a stronger bond, right?
3dPrintCreator: I think using a heatpress with high pressure will give you even better results. The thing will be finding the right timing, but even for that, a heatpress will be the right tool for the job.
JohnB-lt2ou: I've used tpu and it works perfectly. I printed a tpu sticker and then used a heat press to "melt" the tpu under pressure with heat.
I'd recommend using a design that isn't solid or creating a lattice type solid so there is some negative spaces. This will allow the tpu to adhere and bend easier.
Great videos btw:)
douggolde7582: Prewash the shirts.
Blank_Space1984: IPA will pop the TPU off the PEI bed.
darlahpotechin1668: I will have to try it with a heatpress. This is like heatpress vinyl.
CC-nt4zi: Would petg work as well?
Boodster61: I wonder if you put fabric glue down before ironing them would help.
BenjaminWard-ov8wh: my man accidentally created a sick looking tshirt design with the purge line.
thebluestig2654: Maybe try the sandwich method used in cosplay scaled armor prints. Print the first 2 layers, pause the print, add the shirt with magnets, then print another 2 layers, then iron them together through the fabric.

Just work out the stringing issues with the tpu before trying to print directly on the shirt again.
ScytheNoire: Saw Zack Freeman print on shirts before and worked. Ironing on is a good idea, that's how the other DIY methods work.
As for your washing machine, those knobs are either push in or pull out. So can try that. If neither of those work, then it might be broken, but they are not too hard to replace if you get the part number.
xXKisskerXx: inside the shirt, should be a layer of cardboard, with a aluminum foil top (smoothed) so that when you apply the heat from the iron, to the ptfe sheet - through it to the print - into the fabric - it then can 'reflect back' and heat more evenly from the back side. (also prevents front of shirt attaching to back of shirt)

That was my thought. would need testing though, but my conclusion is the iron was heating evenly enough, long enough, or possibly hot enough, or of course, a combination of all 3.
slickstretch6391: Bruh, that prime line looks lice drool. so sick!
jjohnson8288: Why do you print directly onto the ptfe sheet. Then use it like an iron on transfer. You can clean the print before applying it to the shirt.
uttula: hmm… 30˚C isn’t a wash… it’s a cold soak
CyrusWraithWalker: This is very clever. Amazing Idea.
MrNlce30: Would like to see this done with the U1 and multi coloured TPU.
Great video. Keep up the good work.
eberntson: Thank you for this content; it is inspirational. I can't wait to see more.
duroncrush: The string issue can be tweaked in the slicer setting. There is a setting to reduce the how often the nozzle moves from one area to another. Maybe increase the retraction.
kzookid2051: How were the shirts dried - in the dryer, hung on a line? This could affect the outcome. This is definitely worth persuing.
jojoconway136: I wonder if using a shirt press over the TPU would set it more.
mrpickles-w4l: I've seen mold injection on T shirts .
FeiPaul: Had a similar idea, except with a mosaic style image, so there is some space to flex in between the printed parts. Might make PLA more viable.
boreman2943: I have done this repeatedly with PLA and it works great. I print at 0.3 mmm thick and then preheat the iron on high. I use parchment paper between the iron and the print and move the iron slowly and evenly over the print for about 15-20 seconds and that's it. They have survived the washer and dryer with no problems. The only drawback with PLA is it is definitely stiffer than using TPU.
D4RKFiB3R: Could you try less than 100% cotton t-shirts?
delscoville: So much faster to dye-cut vinyl sheets meant for ironing on.
TheInsaneupsdriver: What about printing plastic pads right onto a spandex or tight clothing of some kind? for sports or something like that.

Mar 06 2026

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