Tiny Planetary Gears / Week of June 23 - July 3, 2012

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

MotoBarsteward — Sat, 14 Jul 2012 15:33:45 -0400

There's no stopping me now. Three stages and running like a dream!

Stationary

And in Motion

RichRap knows how to make a man feel inadequate!

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

MotoBarsteward — Fri, 13 Jul 2012 15:00:02 -0400

Scrub the bits about being rubbish and not working. I worked out how to put it together!

Single stage sun and planet gear box.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

MotoBarsteward — Wed, 11 Jul 2012 19:32:55 -0400

Look, I know it's late and it's rubbish and it's only one stage and it doesn't work very well but...

I made it after weeks of trying.

It actually fitted together and just about turns.

And I'm really proud of it.(:P)(tu):)-D>:D<(:D

Try not to laugh too much!

This was printed using slic3r 0.8.5dev and the new flow branch. 0.3 layer height with a 0.4mm J Head mk IVb. I use Pronterface and Sprinter firmware.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

Andrew Diehl — Thu, 05 Jul 2012 14:52:17 -0400

Double post,

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

Andrew Diehl — Thu, 05 Jul 2012 14:47:15 -0400

> Hi Andrew,
>
> Well done on the win, very nice print indeed. Were
> all the colours done in PLA or is it ABS?
> The yellow looks like PLA but I can't tell with
> the other ones.
>
> I would try to print the Quadcopter blade, but I
> usually hate Support structure, but then again
> this is a printing competition, so maybe we can
> all learn a thing or too about support.
>
> I would have cut it in half at the middle and
> printed it vertically to avoid support, then
> joined it back together.
>
> Let us know if that's the challenge.
>
> Cheers,
>
> Rich.

I used ABS for the parts.

I've decided to make the propeller blades as the challenge, since it seems support material is a sticky subject for many reprappers.

I'm a little concerned the propeller would fail if split in the middle given the high forces in flight. If you want to give it a shot that way, feel free.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

Sublime — Thu, 05 Jul 2012 13:32:54 -0400

richrap Wrote:
-------------------------------------------------------
> It could also be worth asking Sublime, he has done
> a lot with Slic3r and may well know why it's not
> correct for you.

0.8.4 has a bug that makes all objects 0.1mm larger by miscalculating the perimeter so that would cause the peg to not fit in the hole.

[github.com] It has been fixed in the Git version and will be in the next release.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

richrap — Thu, 05 Jul 2012 07:53:58 -0400

That is odd, I never had any issues with hole sizes being wrong. Holes being in-filled was an issue!

Check the Estep calibration in firmware again? you may just be over extruding?

Have you made a new config from scratch for Slic3r V0.8.4? there were a few issues with importing older issues of configs into new versions of Slic3r.

It could also be worth asking Sublime, he has done a lot with Slic3r and may well know why it's not correct for you.

The settings I used for the planets were exactly the same but using perimeters set to 10, that just forced Slic3r version 0.8.3 to NOT fill-in the middle section, it was the only way I could get them to print for me with that version.

With Version 0.8.4 they work with perimeter set to 1

And everything fits perfectly - apart from the main bolts are quite loose in the nuts, but are fine when tightened up.

For the big version I scales everything by 350% and it all fitted perfectly.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

hoani.cross — Thu, 05 Jul 2012 07:40:18 -0400

richgain Wrote:
-------------------------------------------------------
> Hi Rich
> I'm still trying to print a copy of Tiny Planetary
> Gears that I can actually assemble!
> I've used your settings in Slic3r 0.8.4 and also
> played around with nozzle size and extrusion width
> a bit but I'm consistently getting holes in the
> planets that are smaller than the posts they are
> meant to fit on. Typical values would be 3.0 mm
> for diameter of posts and 2.7 mm for internal
> diameter of holes. Same problem with the bolts and
> the threaded holes - nothing fits!
> You mentioned in your previous post that you had
> to use different setting for the planets but
> didn't actually say what they were. Any clues to
> help me tune my printer up better would be really
> helpful.
> Cheers
> richgain

There is a bug in 0.8.4 that make perimeters 0.1mm wider (https://github.com/alexrj/Slic3r/issues/507) that is now fixed in development branch. Try with 0.8.3 or less until 0.8.5 is out.

hoani

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

richgain — Thu, 05 Jul 2012 07:32:55 -0400

Hi Rich
I'm still trying to print a copy of Tiny Planetary Gears that I can actually assemble!
I've used your settings in Slic3r 0.8.4 and also played around with nozzle size and extrusion width a bit but I'm consistently getting holes in the planets that are smaller than the posts they are meant to fit on. Typical values would be 3.0 mm for diameter of posts and 2.7 mm for internal diameter of holes. Same problem with the bolts and the threaded holes - nothing fits!
You mentioned in your previous post that you had to use different setting for the planets but didn't actually say what they were. Any clues to help me tune my printer up better would be really helpful.
Cheers
richgain

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

richrap — Tue, 03 Jul 2012 16:30:58 -0400

Andrew Diehl Wrote:
-------------------------------------------------------
> Thanks!
>
> So, I need an opinion before deciding on this next
> competition.
>
> [www.thingiverse.com]
>
> Too hard?

Hi Andrew,

Well done on the win, very nice print indeed. Were all the colours done in PLA or is it ABS?
The yellow looks like PLA but I can't tell with the other ones.

I would try to print the Quadcopter blade, but I usually hate Support structure, but then again this is a printing competition, so maybe we can all learn a thing or too about support.

I would have cut it in half at the middle and printed it vertically to avoid support, then joined it back together.

Let us know if that's the challenge.

Cheers,

Rich.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

Andrew Diehl — Tue, 03 Jul 2012 14:41:24 -0400

Thanks!

So, I need an opinion before deciding on this next competition.

[www.thingiverse.com]

Too hard?

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

Sublime — Tue, 03 Jul 2012 14:20:58 -0400

Leeway Wrote:
-------------------------------------------------------
> I didn't get a chance to play this week, but did
> last week, just had no time to post.
> I read this on the forum. I have an odd quirk
> though that in this part of the Forum, things look
> quite different than they do on the rest of the
> forum.
> Using Chrome. Just though it odd. No delineation
> between posts and no graphics for forum layout.
> I have checked the control panel too.
> Lots of great entries as well.
> I have been wanting a reason to print this before
> the contest. I will have to try it out at some
> point. :)

Press "ctrl F5" and it will re-download the rest of the page. It happened to me once too.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

garyhodgson — Tue, 03 Jul 2012 11:42:41 -0400

I only read the forum via RSS, and jump into the forum only when I get an email for a subject I am particularly following, such as this one.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

Leeway — Tue, 03 Jul 2012 10:57:31 -0400

I didn't get a chance to play this week, but did last week, just had no time to post.
I read this on the forum. I have an odd quirk though that in this part of the Forum, things look quite different than they do on the rest of the forum.
Using Chrome. Just though it odd. No delineation between posts and no graphics for forum layout.
I have checked the control panel too.
Lots of great entries as well.
I have been wanting a reason to print this before the contest. I will have to try it out at some point. :)

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

DeuxVis — Tue, 03 Jul 2012 10:49:18 -0400

I would take a bet that you're nearly alone doing that, nophead. But then maybe I'm wrong.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

nophead — Tue, 03 Jul 2012 10:43:35 -0400

Does anybody read forum posts using the forum? I find it totally impractical and only read the RSS feed, which is flat.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

DeuxVis — Tue, 03 Jul 2012 07:04:35 -0400

Maybe post just a copy of the challenge introduction each week in general, and point wannabe participants here ?

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

Greg Frost — Tue, 03 Jul 2012 06:12:05 -0400

BTW, I think it is a shame that these threads have been moved to their own forum. Im sure there would be more participation if we regularly had a new thread in the General section instead.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

Greg Frost — Tue, 03 Jul 2012 05:53:11 -0400

Congratulations to this weeks winner: Andrew Diehl

I couldnt go past your fantastically clean prints. Magnificent job.

Well done to all the others who managed to get good results of this challenging print, and nice huge gear set richrap.

Oh, to answer nophead's question. It looks reasonably shiny in real life, but that pic has a bright light close by as well as the camera flash, so it is probably doubly shiny in the picture.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

richrap — Mon, 02 Jul 2012 17:53:41 -0400

I know you said Tiny gear set, but I could not resist any longer and had to print a massive one -

350% bigger version -

350pc_rather_large_gear_set.jpg

350pc_rather_large_crank.jpg

The Crank is MASSIVE! compared to the original

350pc_rather_large_parts.jpg

350pc_rather_large_outer_gear.jpg

It all fits perfectly and works very well, you can really see all the fine detail in the Knurled handle and nuts at this size.

You could probably print a 400% sized version on a Mendel if you had enough plastic :)

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

Dad911 — Sun, 01 Jul 2012 20:11:10 -0400

Well, here is my semi-succesful attempt. Tried the last two weeks, but couldn't finish the prints. Inspired by the above (and stubborn) I finally got some good parts.

The Parts:
[attachment 8392 Parts.JPG]
Assembled:
[attachment 8393 Planetary.JPG]
and the reject pile (most from tuning) you can see herringbone gears, as an attempt to adjust the 'stringing' I was getting, I swapped my extruder gears to herringbone, but still could not print multiple parts without stringing.
[attachment 8394 Waste.JPG]

Homemade 8020 extrusion frame, ABS, Greg's with .35 J-Head, Slic3r, Repetier host & frimware, Gen6 (heated bed always on....)

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

nophead — Sun, 01 Jul 2012 09:45:31 -0400

Very shiny! It glistens like it is wet. Does it look like that in real life or is it an artifact of the photography?

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

Greg Frost — Sun, 01 Jul 2012 02:53:43 -0400

Such fun, I couldnt resist building another:

2pynbt2.jpg

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

NumberSix — Fri, 29 Jun 2012 18:40:55 -0400

richrap Wrote:
-------------------------------------------------------
> NumberSix Wrote:
> --------------------------------------------------
> -
> > Hi Rich,
> > Fabulous work!
> > Just a quick question... is the Slic3r
> > nozzle_diameter of 0.42 the 'actual' hole size
> or
> > a fudged figure? I'm curious to know how you
> > arrived at 0.42. It's seems a non-standard
> number,
> > with nozzles typically being sold as .5mm,
> .35mm,
> > etc.
> > Tks,
> > Ivor
>
> Hi Ivor,
>
> Take a look at this Thread
>
> And this blog post from Brian (J-heads) -
>
> It's basically a bit of an odd issue to do with
> J-head nozzles and Slic3r, so Yes I have a '0.5mm
> Nozzle' but I need to set it to be 0.4 or 0.42 to
> get the correct relation of extruded plastic and
> width over height (automatic) correct for a given
> layer height.
> It could all be done by-hand in Slic3r, but it's
> really nice to have exact same settings and only
> need to change the layer height, everything then
> works out correctly if I set the nozzle to be
> about 0.42mm
>
> Cheers,
>
> Rich.

Thanks Rich, that could save me a struggle. I've just received my new .5mm J-Head. I might even give this Planetary Gears a go if I get the new hot -end singing in time!
Ivor

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

richrap — Fri, 29 Jun 2012 13:33:03 -0400

NumberSix Wrote:
---------------------------------------------------
> Hi Rich,
> Fabulous work!
> Just a quick question... is the Slic3r
> nozzle_diameter of 0.42 the 'actual' hole size or
> a fudged figure? I'm curious to know how you
> arrived at 0.42. It's seems a non-standard number,
> with nozzles typically being sold as .5mm, .35mm,
> etc.
> Tks,
> Ivor

Hi Ivor,

Take a look at this Thread

And this blog post from Brian (J-heads) -

It's basically a bit of an odd issue to do with J-head nozzles and Slic3r, so Yes I have a '0.5mm Nozzle' but I need to set it to be 0.4 or 0.42 to get the correct relation of extruded plastic and width over height (automatic) correct for a given layer height.
It could all be done by-hand in Slic3r, but it's really nice to have exact same settings and only need to change the layer height, everything then works out correctly if I set the nozzle to be about 0.42mm

Cheers,

Rich.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

NumberSix — Fri, 29 Jun 2012 10:11:13 -0400

richrap Wrote:
-------------------------------------------------------
> settings in Slic3r 0.8.3 -
>
> ; layer_height = 0.3
> ; perimeters = 1
> ; solid_layers = 3
> ; fill_density = 0.65
> ; nozzle_diameter = 0.42
> ; filament_diameter = 2.86
> ; extrusion_multiplier = 1
> ; perimeter_speed = 40
> ; infill_speed = 40
> ; travel_speed = 230
> ; scale = 1
> ; single wall width = 0.47mm
>
> I put my travel speed up and used a 1.4mm extruder
> reverse for doing plates of multiple parts.

Hi Rich,
Fabulous work!
Just a quick question... is the Slic3r nozzle_diameter of 0.42 the 'actual' hole size or a fudged figure? I'm curious to know how you arrived at 0.42. It's seems a non-standard number, with nozzles typically being sold as .5mm, .35mm, etc.
Tks,
Ivor

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

proto — Fri, 29 Jun 2012 07:45:25 -0400

Shrug. Dunno how it goes together.

*Disqualification - these were made on my ProJet 6000HD (commercial machine).Unfinished - straight from SLA platform.

Layer thickness: 0.1mm
Print time: 2 hours

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

richrap — Thu, 28 Jun 2012 06:33:24 -0400

I got around the issues with Slicer V0.8.3 to print this weeks challenge, and the new version 0.8.4 does not have any of the issues I had, so well worth a download.

Planet_gear_set_of_6_square_with_SD_card.jpg

I made a 6 stage version.

Close_up_set_of_gear_rings_and_planets.jpg

Lots_of_little_gear_planets.jpg

Gear_set_pearl_white.jpg

Some more images and details are on my blog post here.

The planets were printed seperatly as I had some issues and needed different settings, but all the other parts were printed with the following settings in Slic3r 0.8.3 -

; layer_height = 0.3
; perimeters = 1
; solid_layers = 3
; fill_density = 0.65
; nozzle_diameter = 0.42
; filament_diameter = 2.86
; extrusion_multiplier = 1
; perimeter_speed = 40
; infill_speed = 40
; travel_speed = 230
; scale = 1
; single wall width = 0.47mm

I put my travel speed up and used a 1.4mm extruder reverse for doing plates of multiple parts.

The extension bolts for a 6 stage version are up on Thingiverse here

Cheers,

Rich.

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

Andrew Diehl — Wed, 27 Jun 2012 14:26:51 -0400

Within the firmware you can set the acceleration values (Well at least in Marlin)

By a 1cm melt zone, I mean there is no more than 1cm worth of filament that is molten in the nozzle at one time. A short melt zone inhibits really ridiculous flow rates, but gives excellent precision when stopping/starting.

I forgot to mention, the threads are really loose on mine as well.

Thanks for the comments!

Re: Tiny Planetary Gears / Week of June 23 - July 3, 2012

Julio — Wed, 27 Jun 2012 14:18:57 -0400

Andrew,

Great prints. So precise.

What do you mean by "1cm melt zone on the extruder"?

Also, you mentioned acceleration: I thought we could only control the speed, but not the acceleration.

Thanks