Topic: Using PET
What temperature should I use if I'm trying to make PET filament? I went up to around 220, but I stopped there since I thought that it would be better to know what temperature I'm expecting the barrel to turn/filament to come out.
Re: Using PET
Hard to say for sure, as there are many flavors of PET. Do you have a datasheet?
Re: Using PET
No I don't. It's really sketchy what I'm trying to do. I'm just breaking up pet from like packaging and attempting to make filament. I've been looking on the Internet for a while now, but I can't seem to find a solid number for it.
Re: Using PET
Also, how high can I go on the temperature? The instructions say to go to 235 before "emailing for support," but it seems that PET is going to melt if it's higher than 235. Thanks again.
Re: Using PET
That's going to be difficult, because different packaging will use different types of PET, each with different flow and temperature profiles.
The limit is more like 260C, at least with a fully insulated barrel. You can exceed 260C, but you’ll need to supply a 15v or 18v power supply and replace the thermocouple with one rated for higher temperatures, such as this one:
http://www.filastruder.com/products/e3d … welded-tip
The heater and controller can handle 18v, a 12v supply is provided for safety as that results in a limit of around 260C even if an inexperienced user set the temperature dangerously high.
Re: Using PET
thanks I think I can get it below 260
Re: Using PET
I too have been trying to extrude PET. I have found I really need to stick to the same plastics. But I find that the plastic (say a standard 600ml water bottle) never has a number on it, and even if it looks the same it can still have different properties depending on if it has been recycled once or twice already and I also find some of the bottles are different thickness which really plays havoc with the Filastruder. I run the Filastruder at 260 degrees no probs but I have to have all the same plastic in the hopper. Oh and the other thing I have found is actually preparing (shredding and drying) the plastic is so time consuming.
If you have any good tips please let me know
Bec
8 2017-12-19 12:36:17 (edited by paulowaisberg 2017-12-19 12:37:58)
Re: Using PET
Anyone tried to mix recycled PET with other plastics or an additive to make it easier to extrude and less brittle when printing? Like mixing PET and ABS?
Re: Using PET
I am also trying it. Thanks less than 220 degrees, it is impossible for me to melt the PET but since the temperature limit of this module I will try with 250 C
- carl_m1968
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Re: Using PET
paulowaisberg wrote:
Anyone tried to mix recycled PET with other plastics or an additive to make it easier to extrude and less brittle when printing? Like mixing PET and ABS?
If your PET is brittle when printing then you are printing too hot. I use PET and PETG exclusively and my prints are never brittle. They will bend just like ABS or PLA before they actually break.
Printing since 2009 and still love it!
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Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.
Re: Using PET
carl_m1968 wrote:
paulowaisberg wrote:Anyone tried to mix recycled PET with other plastics or an additive to make it easier to extrude and less brittle when printing? Like mixing PET and ABS?
If your PET is brittle when printing then you are printing too hot. I use PET and PETG exclusively and my prints are never brittle. They will bend just like ABS or PLA before they actually break.
What temperature do you use to print the PET? and hot bed temperature ?, I also want to ask if you have recycled PET prints with the filastruder or other extruders, and if you have been successful
- Murph
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Re: Using PET
For PETG I Print at 220C on the hotend 80C on the bed.
Perfect results every time.
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Re: Using PET
For virgin PET I print at 260c at 55mm/s. But not all PET's are the same. Recycled bottle PET will most likely be lower as the manufacturers use additives to help control the polymer flow into the blow mold.
PETG on the other hand has glycol, and that allows it to extrude with a lower temp and offer great layer adhesion. The trade off is a lower HDT and slower printing than PET.
Bed temp on both for me is 75c.