real1shep
Well-known member
Another hobby......
chainsaw restoration....there is a guy that has access to one of those expensive machines at work. He began printing an unobtainium plastic fan that bolts to a chainsaw flywheel.
He's selling them for about $40 a pop. His company would making zero profit at that price point, but they encourage the employees to have side projects.
Here's a direct quote from Richard about his process: "For this print I set the plastic extruder to 230 C, which is well above ABS glass transition temperature so layer to layer adhesion shouldn't be a problem. The extruder uses a standard PID controller so the temperature doesn't vary by more than about 0.5C. My concern is when there is a geometry change, like from a straight wall to an angled support, that since 100% of the new layer isn't supported by a previous layer we could potentially have a delamination issue. I guess we will find out after some of the promised longevity testing is done."
Then he said this later on:"Resurrecting an old post. I have been playing with various plastics and found that PETG (Chris-PA had mentioned it in earlier posts) actually has better properties than the ABS I originally printed the original fans out of. Strength wise, ABS is perfectly fine. But for prolonged exposure to solvents (ie gasoline) PETG is superior. If anyone is interested in purchasing the flywheel fans, let me know, I have had a few on saws for a while and they seem to be working great.
Kevin
chainsaw restoration....there is a guy that has access to one of those expensive machines at work. He began printing an unobtainium plastic fan that bolts to a chainsaw flywheel.
He's selling them for about $40 a pop. His company would making zero profit at that price point, but they encourage the employees to have side projects.
Here's a direct quote from Richard about his process: "For this print I set the plastic extruder to 230 C, which is well above ABS glass transition temperature so layer to layer adhesion shouldn't be a problem. The extruder uses a standard PID controller so the temperature doesn't vary by more than about 0.5C. My concern is when there is a geometry change, like from a straight wall to an angled support, that since 100% of the new layer isn't supported by a previous layer we could potentially have a delamination issue. I guess we will find out after some of the promised longevity testing is done."
Then he said this later on:"Resurrecting an old post. I have been playing with various plastics and found that PETG (Chris-PA had mentioned it in earlier posts) actually has better properties than the ABS I originally printed the original fans out of. Strength wise, ABS is perfectly fine. But for prolonged exposure to solvents (ie gasoline) PETG is superior. If anyone is interested in purchasing the flywheel fans, let me know, I have had a few on saws for a while and they seem to be working great.
Kevin
