# Tag Info

26

No, due to 3 reasons PET is not (easily) printable. There is a lot of confusion on what Filaments you can buy: most times filament branded PET is actually PETG, sometimes PETT. PET is not an easily printable material at all. With expert knowledge and the right machine settings it can be printed, but even then, it is not as easily recyclable into a useable 3D-...

6

An extra gap of 0.2 mm on top of your existing gap seems rather illogical as the filament is not squished at the build plate anymore. Furthermore 0.2 mm plus something you already have will soon result in a gap over 75% of your nozzle diameter (including your first layer; note that 75% is considered to be the max for good adhesion). The filament will then ...

6

This strongly depends on the cost of the spool in question. Prices are not consistent among materials at all; a spool of ABS can cost anywhere from \$15 to \$60 and the same price range applies to pretty much all other plastic. For the purpose of this question I am going to assume that a 1 kilogram spool costs \\$25 (regardless of material) but you can scale ...

5

Unless you plan to use your copter outside Earth atmosphere or expected lifetime is more than tenths of years, UV degradation should not be a problem for PETG. Some of the net sources indicate the possibility of degradation after significant time of constant exposure to outdoor conditions (mostly color change), which sounds mostly like absence of practical ...

3

I've had similar experiences switching from PLA to PETG, and haven't gotten it fully figured out yet. From what I know so far, to reduce petg strings: Increase retraction Lower temperature

3

The simplest method is to divide spool price by its length. That's obvious I think. If PLA 1.75 (1kg net) has about 120m length and it costs 16usd then it looks like 1m costs arount 13c. =price/length I think everyone can buy different filament at different price from different vendors so there is no good general price to enter into your slicer app. It has ...

2

Ethyl acetate (sold as a MEK substitute) is supposed to work for vapor smoothing PET. It doesn't seem very toxic (it's used to decaffinate cofee and tea, and as a nail polish remover), but you might want to look more into it. There's a post on Printed Solid's blog where he vapor smoothed colorFabb XT and MadeSolid PET+ along with a few other filaments and ...

2

I've found a chart which covers several plastics and solvents and only two of them (Chloromethane and Chloroform) are rated "D" which includes dissolving the material and both seem to be quite nasty and I doubt you will be able to purchase them without being placed on several lists. Is it possible that something like XTC-3D from Smooth-On would work for you?...

2

Those are fairly common issues and you should be able to tweak your way into good prints. First layer perimeter bonding: Slow down first layer to around 15mm/s with fan off to address that bonding issue. Gloopy blobs: To address the gloopy blobs, slow down to about 40mm/s or even less, and be sure to use wiping...also, maybe increase your retraction length. ...

2

If you are using a printer that runs Marlin, you might consider upgrading to a version with Linear Advance. Once I started using Linear Advance, I reduced the stringing of PETG. Also I was able to reduce the retraction amount without reducing the quality of the prints.

1

If you think it is a slicing problem, look at the G-code. You might want to arrange for the infill to be orthogonal to the axes, but it ought to be easy enough to calculate the ratio between printhead motion and the extruder. G-code is just text, and fairly easy to make sense of. The RepRap wiki has a good reference to the commands, and all you care about ...

1

PETG might not be the best for long term UV exposure. According to Midland Plastics, PETG doesn't hold up well in outdoor applications, and is susceptible to UV degradation. Unless you have an outdoor or UV rated PETG product which will have additional chemicals added to it, it may breakdown more quickly than you would expect. (the link I used was : http://...

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