eSUN Flexible TPE Filament 1.75mm, TPE-83A 3D Printer Filament, 1KG Spool 3D Printing Filament for 3D Printers, Black

Great material, so soft and grippy

eSun TPE-83AThis stuff is amazing. It'll have you standing at the printer poking at the object like it was your first ever print because it is so interesting.So far, I have used it to make a cheek rest and a shoulder pad, and it printed extremely well. I printed on a Mk3S from a Sunlu S2 dryer via (very long) reverse-Bowden at moderate-to-low speed, and the only caveat was that I had to run 110%-115% flow (adjusted live on first couple of layers), I am guessing to compensate for the friction from the Bowden tube. I saw some upward curling on some thin (2-4 mm) unsupported ~40° degree overhangs, but the curling eventually self-corrected when the objects filled out and converged, resulting in a relatively minor cosmetic defect. Otherwise, this stuff printed extremely smooth and flat, and even tree supports came out pretty good.Not only can you use it to make objects anywhere from somewhat compliant to amazingly flexible, I believe you could use this to actually print fully functional gaskets and other seals (I have always harbored doubts about doing this with TPU). I think you could even use it to print custom-sized rubber bands, based on the properties of the purge lines and skirts that came off the prints.It is a little pricey, but nothing too crazy (not crazy like PA6). You should buy some so eSun keeps making it >-----Update: I can see why the reviews of this stuff can be controversial.After nothing but success with the TPE, I came back to it some time later, and ran into nothing but frustration. I could barely get it to print more than a few layers. When it works, it is a wonder, but It seems that this material either ages poorly or reacts *extremely* negatively to moisture, perhaps permanently.I would recommend buying it to use when you need it rather than stocking up, and storing it in an air-tight cereal 4L container with desiccant. I am still leaving 5 stars for its unique properties, and I admittedly did not do a good job storing it when not in use.

I thought I should chime in here after reading the wildly mixed reviews for this product. I had bought a roll some time ago and only just had a chance to use it. It was packaged on a really nice plastic spool. I sell standard flexible products and normally use Ninjaflex. I did a head-to-head comparison with a couple different parts with this esun filament. I am so surprised and happy with this product that I'm now offering two versions of some of my products as an experiment. Most people like the incredible glossy finish of ninjaflex, but some old-timers like the matte finish of vintage rubber. Until now I had never found a suitable alternative, but this esun product is fantastic. I only have to slightly modify my settings to print this, and it just comes out perfect time after time after time without issue. With the matte finish, you can hardly notice the print lines. The flexibility is almost exactly the same. It's about 1/3 the cost! The drawbacks that I notice are that it is not as strong as ninjaflex, and the grippiness is maybe 15 or 20% less, estimating.The prints using this filament are just gorgeous, seriously, as long as you want matte.I can't speak to all the complaints other people have, with the exception of the change to a cardboard spool. This is a ridiculous choice, esun if you're reading this, please ditch this stupid idea and use a proper plastic spool using recycled plastic. Having said this, I bought a second roll and sure enough it came with cardboard, I wanted to try this out before writing a review. Given the characteristics of TPE, I print directly from a drying box, so the cardboard spool is sitting right on the super hot rollers. esun, please reverse this stupid idea, this is a dangerous fire hazard. However, I had no issues with it. So far, the integrity of the spool has remained fine even though I've printed half of it so far with perfect prints. I have not smelled anything that would indicate the cardboard is at a dangerous temperature.I can also confirm that the filament is wound onto the spool in an unacceptable sloppy manner, leading sometimes to a resistance when pulling, which of course would be the death of a print with TPE, maintaining minimum resistance is the key. Esun, you have a great product here and there's a need for it, please use a proper plastic spool and wind it properly like a professional company.

TPE is softer than TPU. If you want softer, order this.

They are winding these on cardboard spools and wont update the listing to reflect the actual product they offer.This formula also seems to be different from the previous rolls I purchased... Before, it actually felt like rubber and had a rubbery matte finish, but now it is more of a plastic shiny finish as if it is 95A or somewhere in between the 2. This is really unfortunate because the previous rolls I purchased were amazing, and I was able to make really good antivibration feet for my printer. Now this stuff is too stiff where it is just as bad as the 95A TPU I have. I honestly feel really ripped off, and I dont think I will be buying this again in the future.Also, eSun is pulling some shady business by flagging negative reviews that state the filament arrived on a cardboard spool instead of a plastic one. How is amazon warehouse responsible for how eSun is manufacturing the product? This is a loophole that way too many companies are abusing, and Amazon needs to fix it.On top of all that, eSun has bad customer service. I contacted them about the TPE 83A being on cardboard spool when it is advertised on plastic roll, and they asked me if I want an stl file for a plastic ring so it fits in the AMS system... Umm, you cant put TPU/TPE in the AMS system, so why the heck would they even offer such a stupid solution?