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05-14-2014, 11:05 AM #7
IN the past few months, we have continued to develop these plates and have come to a few conclusions and an improved design. The current design is more rigid than the early versions, but still flexible enough to help remove the print. Conclusions: The surface works fantastic with PLA. It will print great without heat. Even small ABS parts and nylon can be printed without heat. But for larger ABS parts, the shrinkage of the material continues to be a challenge. What it comes down to is that something has to give. The force of the material shrinking is incredibly strong. So one of four things happens (or a combination thereof): 1. The layers of the part itself pull apart. 2. The part pulls off the plate, especially at the edges or corners. 3. The layers of the printer plate separate slightly. 4. The flexible printer plate flexes up a little.
The fact that the plate pulls apart or flexes up sometimes is a testament to how good the adhesion is. This is with no added glue or hairspray or anything else. Getting a good first layer usually results in a very strong bond. But it can still pop off after it cools. What size ABS part can be printed is a function of several other variables so it's hard to define how big you can go.
After much experimentation, we believe the solution for printing larger ABS parts ultimately lies somewhere other than with the printing surface. Heated build chambers like industrial machines use is certainly one way to go, but I guess we'll have to wait for those patents to expire or else build them at home. Would love to hear some other opinions about that...what other solutions are there for printing big ABS without warping?
Wayne Huthmaker
PRINTinZ.com
(Formerly 3DPrinterNinja.com)
Qidi X Plus 3 Paper thin first...
05-27-2024, 01:15 AM in General 3D Printing Discussion