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Positron V3.2 as First Printer?
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this post was submitted on 18 Jun 2024
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So much of 3d printing comes down to getting everything perfectly aligned and dialed in. On a foldable printer like this, I would expect you to spend a ton of time calibrating after every time you move it.
I think you're on the right track with not wanting to deal with the problems likely to come with a first gen printer. Unfortunately I can't recommend another product that fits your particular use case, maybe a https://bambulab.com/en-us/a1-mini but it's not as portable as that positron.
Agreed, imho calibration is the biggest issue. Also print times - generally I wouldn't leave a print job running (e.g. in hotel room whilst I'm out sightseeing) without being near or at least monitoring it. And finally the smell of some filaments can bother some people.
On the otherhand it looks really neat, the size is great and I think it'd be a good solution to your requirements. Just don't be surprised if you end up making a permanent space for it in order to avoid too much recalibration everytime you set it up 😂
And addressing your other concern, I think part of the original reprap ideal was that a 3D printer could print parts to build another printer, and parts to modify and improve itself. I've got a i3 clone and parts are usually generic and off the shelf - you might be able to check what parts it uses?
I just realized..... it looks like an upside down printer? The extruder is on the bottom on x/y sliders and the bed moves up. That feels like a bad idea to me, it'll make bed adhesion so much more important.
https://www.youtube.com/watch?v=X_QLxTVtyng
I'm skeptical of claims + quality
If you think about bed adhesion, the forces on a light plastic part from gravity are negligible. Think of how much force it takes to pop a finished part off the bed compared to the weight of the part. When you have adhesion problems, I’m sure the plastic shrinkage is causing pretty large forces (or on a tall part the nozzle bumps the top of the print and has a long lever arm to pry the part off the build surface).