Propeller Blade, Week of July 4 - July 11, 2012
Posted by Andrew Diehl
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Propeller Blade, Week of July 4 - July 11, 2012 July 05, 2012 02:42PM |
This week's competition is a propeller blade, as a test of thin features and support structure 
The files can be found here with different orientations.
The parts will be judged functionality.
www.Fablicator.com
The files can be found here with different orientations.
The parts will be judged functionality.
www.Fablicator.com
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Re: Propeller Blade, Week of July 4 - July 11, 2012 July 06, 2012 10:14PM |
That certainly is challenging. The blade is extremely thin in a few places. I have decided to try the cut it in half method and Im using the version of Slic3r that has comb. Given the extremely thin walls, I have told Slicer my nozzle size if 0.16mm and im using a layer height of 0.075. You can see how fine it makes the filaments in this picture (compared to a fingerprint) and that is on the bottom of the part where im using 200% first layer thickness.
I stuck the 2 halves together by spoilling a bit of acetone on my print bed and dabbing one of the parts in it. This stuck the part to the bed almost instantly! But when I wrenched the part off the bed it stuck quite readily to the other half.
I have an M4 bolt in the hole in the middle and im about to get the safety goggles and give it a go in my power drill.
Given how thin some parts of this thing are, I'm not sure how well the support material approach will work. I'm keen to see if anyone has success doing it that way.
Edited 3 time(s). Last edit at 07/07/2012 01:43AM by Greg Frost.
I stuck the 2 halves together by spoilling a bit of acetone on my print bed and dabbing one of the parts in it. This stuck the part to the bed almost instantly! But when I wrenched the part off the bed it stuck quite readily to the other half.
I have an M4 bolt in the hole in the middle and im about to get the safety goggles and give it a go in my power drill.
Given how thin some parts of this thing are, I'm not sure how well the support material approach will work. I'm keen to see if anyone has success doing it that way.
Edited 3 time(s). Last edit at 07/07/2012 01:43AM by Greg Frost.
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Re: Propeller Blade, Week of July 4 - July 11, 2012 July 07, 2012 05:17AM |
I gave it a go using "Support" set to rough in KISSlicer, just to see how it might come out. I've never printed anything with supports before and it was an interesting experiment, even if the result was a bit patchy. I'm happy to share the experiment even thought it's not really a competitive contender. It does show it can be printed with supports and could be improved on with some tuning of the settings.
Removing the supports was a time consuming and tedious process, but the main object did remain quite intact to my surprise considering the amount of force it took to remove the other shell.
Here it is from a slightly different angle.
Finally, here's it is before removing from it's support shell.
Print speed was 15mm/sec on everything, so it too about 2 hours to print. Width .45, layer .3, I'm using a ".5mm" j-head, feeding 3mm filament, on a Prusa RepRap, running Gen6 electronics.
It's not a serious entry but does show it can be printed with support. It's a challenging print. I've a lot more to learn about printing with supports.
Ivor
Removing the supports was a time consuming and tedious process, but the main object did remain quite intact to my surprise considering the amount of force it took to remove the other shell.
Here it is from a slightly different angle.
Finally, here's it is before removing from it's support shell.
Print speed was 15mm/sec on everything, so it too about 2 hours to print. Width .45, layer .3, I'm using a ".5mm" j-head, feeding 3mm filament, on a Prusa RepRap, running Gen6 electronics.
It's not a serious entry but does show it can be printed with support. It's a challenging print. I've a lot more to learn about printing with supports.
Ivor
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Re: Propeller Blade, Week of July 4 - July 11, 2012 July 11, 2012 11:37AM |
Congratulations Greg! You'll have to print a quad-copter next!
Andrew, tks for the additional info.
The participation was low, but there was a significant number of thingiverse downloads of the STL. It maybe just holiday season, or the perceived difficulty of the challenge.
Some prize sponsorship by some of the vendors might bring more people in also. The vendor would get advertising out of it.
I'd suggest a pointer thread in the General section of the forum might lead more readers to the competition also. Just some suggestions.
Ivor
[numbersixreprap.blogspot.com]
Andrew, tks for the additional info.
The participation was low, but there was a significant number of thingiverse downloads of the STL. It maybe just holiday season, or the perceived difficulty of the challenge.
Some prize sponsorship by some of the vendors might bring more people in also. The vendor would get advertising out of it.
I'd suggest a pointer thread in the General section of the forum might lead more readers to the competition also. Just some suggestions.
Ivor
[numbersixreprap.blogspot.com]
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Re: Propeller Blade, Week of July 4 - July 11, 2012 July 22, 2012 04:56AM |
It was the latest competition, will we have another objet to try to print soon ?
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