I think I found the material that Stratasys uses to insulate their printers
June 07, 2020 03:02PM
I was browsing CNC machines, when I came across linear rail covers that are very similar to the bellow material in the Stratasys patent. A quick search on McMaster revealed them to be called "flat bellows". They can be found in a lot of places with widths of up to 130 mm, so I could potentially see multiple sheets of this material being used for insulating the top of a 3d printer. Enjoy smiling smiley
Re: I think I found the material that Stratasys uses to insulate their printers
June 09, 2020 08:41PM
or something cheaper.


[mechabits.co.uk]
Re: I think I found the material that Stratasys uses to insulate their printers
June 14, 2020 01:20PM
No. Thats not what Stratasys uses.
I'm building a rough copy of a Fortus 900 (only smaller volume). Fortunately we have 2 at work and I have been all over them. The accordion type baffles form a hexagon profile and are made from fiberglass cloth with silicone as the matrix, sewn with kevlar thread. Material is .008" thick. The company that makes them is Centryco , they are hand made and expensive. I bought an industrial sewing machine, the material off Ebay (slightly thicker) and am just starting to make them myself. Stratasys was granted a patent extension which ends next year I believe. Right about the time my machine will be done
Re: I think I found the material that Stratasys uses to insulate their printers
June 14, 2020 07:35PM
0.008" is really thin, are you sure?

The reason I pointed this out was that the insulation properties would be roughly the same, but without the high price.

I'm interested to see how your project turns out though.
Re: I think I found the material that Stratasys uses to insulate their printers
June 15, 2020 04:04AM
I'm sure. I put the calipers on them. The only reasoning I can see to make it thin is so it will behave (sagging/buckling) especially on the large x axis section.
Re: I think I found the material that Stratasys uses to insulate their printers
June 15, 2020 09:03AM
I'm interested now, because that's really thin. Do you know if there are any figures out there for thermal transmissiveness?
Re: I think I found the material that Stratasys uses to insulate their printers
June 16, 2020 07:58AM
Centryco could probably provide you with insulation properties but that's only part of the equation. The design will also suffer losses from leaks and bellow pumping action. IIRC baffle surface temp was around 60c for a 150c chamber.
Re: I think I found the material that Stratasys uses to insulate their printers
December 09, 2020 06:15AM
Hi Bill,

very interesting insights you're sharing here. If you could share a bit more information about the original design from Stratasys as well as which fabric you bought that would help me a lot.

PS: I also sent you a PM
Re: I think I found the material that Stratasys uses to insulate their printers
December 18, 2020 08:00AM
Thanks for the information. I was looking for the same.

Regards,
Rhea


Vashikaran Specialist Baba Ji | Get Your Love Back By Vashikaran
Re: I think I found the material that Stratasys uses to insulate their printers
December 26, 2020 03:23PM
Sorry guys. I dont get over this way often. [www.ebay.com]
14oz is what I have and is about .015" thick. he also has 32oz. I attached a picture of the design. I don't recall the dimensions but I have a note stating that its about 50mm tall when completely collapsed. I have been refurbishing my Haas VF-2 lately so I havent made any progress on the printer but I did make a simple cuff that attaches to the bottom of my X carriage using this material. Kinda acts as a moving chamber so I can effectively print small parts from 9085 and PEKK that dont need to be annealed after. Also if you go over to 3dxtechs website their printer has what appears to be the same insulation and nozzle arrangement as the Fortus 900
Attachments:
open | download - bfl.jpg (47.1 KB)
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Re: I think I found the material that Stratasys uses to insulate their printers
December 27, 2020 07:00AM
hello guys ,can you tell me what type of build plate is used on the fortus for printing peek ?
i'm also having trouble finding a fan that is rated for 150c , for air circulation . any ideas?
thanks
Re: I think I found the material that Stratasys uses to insulate their printers
December 27, 2020 11:25AM
Same material that is being printed although PEKK sticks real well to PEI. Not sure about PEEK but would assume the same
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