I made a huge custom high temperature 3D printer
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Wow, amazing printer! The roller bellows is a great idea. Interested in seeing it print PEEK and PEI!
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Really cool!
It is good to see more high temp printers popping up.
What fabric did you use for the thermal barrier?
Looks like silicone covered Aramid? Of sorts?
Do you have a link?
Here is my high temp printer:
https://reprap.org/forum/read.php?152,850647 -
Fantastic project Grayson and given the hands on nature, as distinct from a paper study in sure you are learning a great deal. There's a Masters degree thesis in some of the issues you are touching on as you no doubt are aware.
I'd suggest you use auto coolant in your water cooling system to prevent galvanic corrosion and consider using integral flexures to relieve differential thermal expansion issues without having to add parts.
Be scrupulous about avoiding features also found in Stratasys machines in anything you are considering selling. They are adept at managing their intellectual property and they are not your friends!
We look forward to a refined prototype and to your first PC or Ultem print! -
I know metric can be difficult but .. you may want to revise the perks?
typo fixed
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@bearer Fixed, thank you!
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@NitroFreak I have been a huge fan of your work for several months now. I have been meaning to reach out and swap stories/ problem solving methods. I used glass fiber silicone fabric. Printed on it was "welding fabric" Link to where I got it: https://www.tarpsnow.com/index.php/silicone-fiberglass-fabric-by-the-yard-roll.html?gclid=CjwKCAjwu5veBRBBEiwAFTqDwdYSBPqoeXbokl0bSiwG44zAfgKuLMHZc7IsjyRM4GwG0aRzkbjeXBoCoGUQAvD_BwE
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Doing my masters on additive manufacturing would be super cool. Defintely something to think about
I actually I am using coolant used in cars for the cooling loop. I recently replaced an engine so I have a bunch of automotive fluids left over.
can you expand on what you mean by integral flexures?
While Stratasys has been a source of some design inspiration, much of the way they do buisnes is not. I actually applied to intern there last year and they weren't interested. I appreciate the heads up
Still working on getting things tunned, but I will post about it soon
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Thanks! I kept thinking about how much of a pain it would be to sew bellows like Stratasys does and ended up finding an easier way to do it. I actually have a new design that iterates on this one that is slated to be included on the V2.
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@ggalisky Re flexures look here:
image url)This is a non-integrally-formed flexure. Its a large XY table from years ago in my past when I designed a solder paste inspection machine. The Y axis gantry runs top left to top right. The LHS of it is attached to the X-axis. The RHS of it is simply propped, using a thin black stainless steel plate. The lower end of the plate is borne by a linear rail hidden in the black sheetmetal folded section, which in turn is bolted to machined pads welded to the white frame, which is heavy duty box section mild steel. The point of the flexure is to allow the gantry to be a propped cantilever without the front and rear X axis linear ways fighting with each other due to inherent non-parallelism and coplanarity. Vertical and and X-axis stiffness is provided but all other DOF's are unconstrained.
The king of flexures, including integrally-machined ones, is Alexander Slocum, who teaches at MIT. Heres an extract from him: https://mech.utah.edu/~me7960/lectures/Topic12-Flexures.pdf
Another king among inventive engineers with a taste for flexures is Dan Gelbard. His (video) reflections on how to make and use them is here: https://www.youtube.com/watch?v=PaypcVFPs48Have fun!
Tony Owens
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@nitrofreak said in I made a huge custom high temperature 3D printer:
Really cool!
It is good to see more high temp printers popping up.
What fabric did you use for the thermal barrier?
Looks like silicone covered Aramid? Of sorts?
Do you have a link?
Here is my high temp printer:
https://reprap.org/forum/read.php?152,850647It looks really cool! Where did you get it?
