Propeller Blade, Week of July 4 - July 11, 2012 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. https://reprap.org/forum/read.php?282,141443,141443#msg-141443 Thu, 05 Mar 2026 02:17:21 -0500 Phorum 5.2.23 https://reprap.org/forum/read.php?282,141443,144650#msg-144650 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,144650#msg-144650 DeuxVis Competitions Wed, 25 Jul 2012 08:42:24 -0400 https://reprap.org/forum/read.php?282,141443,144006#msg-144006 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,144006#msg-144006 Emmanuel Competitions Sun, 22 Jul 2012 04:56:29 -0400 https://reprap.org/forum/read.php?282,141443,142707#msg-142707 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,142707#msg-142707 -------------------------------------------------------
> Congratulations Greg.
>
> Greg, which version of slic3r were you using?

git avoid-crossing-perimeters-graph branch.]]> Greg Frost Competitions Fri, 13 Jul 2012 19:52:43 -0400 https://reprap.org/forum/read.php?282,141443,142657#msg-142657 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,142657#msg-142657 Andrew Diehl Competitions Fri, 13 Jul 2012 14:17:11 -0400 https://reprap.org/forum/read.php?282,141443,142653#msg-142653 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,142653#msg-142653
billyzelsnack Wrote:
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> Cold?]]> MotoBarsteward Competitions Fri, 13 Jul 2012 13:32:27 -0400 https://reprap.org/forum/read.php?282,141443,142530#msg-142530 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,142530#msg-142530 billyzelsnack Competitions Thu, 12 Jul 2012 19:24:50 -0400 https://reprap.org/forum/read.php?282,141443,142472#msg-142472 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,142472#msg-142472 Andrew Diehl Competitions Thu, 12 Jul 2012 13:09:51 -0400 https://reprap.org/forum/read.php?282,141443,142372#msg-142372 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,142372#msg-142372 -------------------------------------------------------
> Andrew Diehl Wrote:
> --------------------------------------------------
> -----
>
> > I use 36in of 1.75mm filament dissolved in 2oz
> of
> > Acetone to make a slurry, spread a thin coat on
> > the bed while cold. Works wonderfully.
> >
>
> _______________
>
> Hi Andrew.
>
> Would this technique work with PLA?

It won't work with PLA, partially because PLA doesn't dissolve in acetone. What you can do though is create a diluted mixture of PVA glue - commonly called Elmer's or white glue - and brush that on the bed. Something like a 1:4 ratio of glue to water.]]> NewPerfection Competitions Thu, 12 Jul 2012 02:30:32 -0400 https://reprap.org/forum/read.php?282,141443,142287#msg-142287 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,142287#msg-142287


Julio Wrote:
-------------------------------------------------------
> Andrew Diehl Wrote:
> --------------------------------------------------
> -----
>
> > I use 36in of 1.75mm filament dissolved in 2oz
> of
> > Acetone to make a slurry, spread a thin coat on
> > the bed while cold. Works wonderfully.
> >
>
> _______________
>
> Hi Andrew.
>
> Would this technique work with PLA?
>
> You extrusion width over layer height is pretty
> high...do you think this makes nice prints for a
> specific reason?
>
> Thanks]]> Andrew Diehl Competitions Wed, 11 Jul 2012 14:33:54 -0400 https://reprap.org/forum/read.php?282,141443,142284#msg-142284 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,142284#msg-142284
Greg, which version of slic3r were you using? I'm using 0.8.5dev but on the New_flow branch. I think it was missing out some of the support structure in the first couple of layers and then ended up trying to print the blade in free air so I abandoned the print rather than risking messing up my print head. I stopped using 0.8.4 because none of the parts would fit together.

I did post a thread on the slic3r forum about my experience with 0.8.5dev and support structure but everyone's rush to comment was notable by its absence!]]> MotoBarsteward Competitions Wed, 11 Jul 2012 14:22:08 -0400 https://reprap.org/forum/read.php?282,141443,142268#msg-142268 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,142268#msg-142268 -------------------------------------------------------

> I use 36in of 1.75mm filament dissolved in 2oz of
> Acetone to make a slurry, spread a thin coat on
> the bed while cold. Works wonderfully.
>

_______________

Hi Andrew.

Would this technique work with PLA?

You extrusion width over layer height is pretty high...do you think this makes nice prints for a specific reason?

Thanks]]> Julio Competitions Wed, 11 Jul 2012 12:29:03 -0400 https://reprap.org/forum/read.php?282,141443,142258#msg-142258 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,142258#msg-142258
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]]> NumberSix Competitions Wed, 11 Jul 2012 11:37:09 -0400 https://reprap.org/forum/read.php?282,141443,142246#msg-142246 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,142246#msg-142246

The one I printed was using KISSlicer PRO, using 1.75mm Nuclear Green ABS.

I use 36in of 1.75mm filament dissolved in 2oz of Acetone to make a slurry, spread a thin coat on the bed while cold. Works wonderfully.

96% of the support came off really easily, the last bit took a bit of effort only because I was worried about damaging the fragile blade edges.

Settings:

.125mm layers
.4mm extrusion width
2 loops
100% solid
stacking = 2 (equivalent to 2 layer thicknesses for support, makes print faster)
Main Support flow rate set to .75 (the interface flow rate was effectively ~.56 since it is automatically set to .75 the Main support flow rate.]]> Andrew Diehl Competitions Wed, 11 Jul 2012 10:25:00 -0400 https://reprap.org/forum/read.php?282,141443,142187#msg-142187 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,142187#msg-142187 That came out nice and clean. How easily did it separate from the supports? What did you use to slice it and what were your main settings?
What material was it printed in?
On a side note, have you coated your glass top to aid adhesion? It looks like something was brushed on to the glass and dried off. Hows that working out and what did you use?
Ivor]]> NumberSix Competitions Wed, 11 Jul 2012 03:46:28 -0400 https://reprap.org/forum/read.php?282,141443,142163#msg-142163 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,142163#msg-142163 Andrew Diehl Competitions Tue, 10 Jul 2012 23:31:34 -0400 https://reprap.org/forum/read.php?282,141443,141920#msg-141920 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,141920#msg-141920
MotoBarsteward Wrote:
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> Mmm. Having first go at printing it. Never used
> support before. Trying with 0.8.5dev new flow.
> Trying flat first. Not sure what is going to
> happen as I can see that it's trying to print in
> free air.
>
> I'm going to leave it over night and see what mess
> I find in the morning.]]> MotoBarsteward Competitions Mon, 09 Jul 2012 17:07:16 -0400 https://reprap.org/forum/read.php?282,141443,141918#msg-141918 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,141918#msg-141918
I'm going to leave it over night and see what mess I find in the morning.]]> MotoBarsteward Competitions Mon, 09 Jul 2012 17:02:33 -0400 https://reprap.org/forum/read.php?282,141443,141697#msg-141697 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,141697#msg-141697
http://www.youtube.com/embed/nYncQyxPq8k]]> Greg Frost Competitions Sat, 07 Jul 2012 22:46:06 -0400 https://reprap.org/forum/read.php?282,141443,141608#msg-141608 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,141608#msg-141608


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
]]> NumberSix Competitions Sat, 07 Jul 2012 05:17:21 -0400 https://reprap.org/forum/read.php?282,141443,141586#msg-141586 Re: Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,141586#msg-141586


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.
]]> Greg Frost Competitions Fri, 06 Jul 2012 22:14:14 -0400 https://reprap.org/forum/read.php?282,141443,141443#msg-141443 Propeller Blade, Week of July 4 - July 11, 2012 https://reprap.org/forum/read.php?282,141443,141443#msg-141443 and support structure :)

The files can be found here with different orientations.

The parts will be judged functionality.]]> Andrew Diehl Competitions Thu, 05 Jul 2012 14:42:40 -0400