Kirigami Shapeoko

tbfleming
Posts: 89
Joined: Sat May 31, 2014 12:04 pm

Kirigami Shapeoko

Post by tbfleming » Sat Aug 16, 2014 4:23 pm

I want to protect the slides and belts of my new Shapeoko, so I decided to try paper folding. Here's what I have so far.
Y-Bellows.JPG
Y-Bellows.JPG (72.52 KiB) Viewed 6552 times
Y-Carriage.JPG
Y-Carriage.JPG (76.7 KiB) Viewed 6552 times
Here's how my Z axis performs:


Here's how I make the bellows:


I'm using a Cricut Explore to cut out the shapes and score the fold lines. All my design files are SVG; I placed what I have so far at https://github.com/tbfleming/Shapeoko-Kirigami .

Gadgetman!
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Re: Kirigami Shapeoko

Post by Gadgetman! » Sat Aug 16, 2014 6:49 pm

Cool.

I've wanted one of those cutter/plotters for a while.
(Yeh, the SO can probably be used for this, too, but that won't fit on a shelf... )

Any recommendations or tips?
Weird guy...
Shapeoko 2014F: 1000mm X/Y, 300W Quiet Cut spindle, Arduino Uno/G-shield and GRBL 0.9i
15x30 drag chains, custom spindle mount, 9mm belts, 8mm endplates, 6mm motor plates.

tbfleming
Posts: 89
Joined: Sat May 31, 2014 12:04 pm

Re: Kirigami Shapeoko

Post by tbfleming » Sat Aug 16, 2014 8:03 pm

Gadgetman! wrote:Cool.

I've wanted one of those cutter/plotters for a while.
(Yeh, the SO can probably be used for this, too, but that won't fit on a shelf... )

Any recommendations or tips?
I like the Cricut Explore so far; its interface is web-based and is nicely done. Other machines require you to manually swap out the cutter and scoring tools, or worse, use the cutter for scoring.

tbfleming
Posts: 89
Joined: Sat May 31, 2014 12:04 pm

Re: Kirigami Shapeoko

Post by tbfleming » Wed Aug 20, 2014 1:46 pm

Finished Z axis protection.
z bellows.JPG
z bellows.JPG (53.64 KiB) Viewed 6101 times

akhlut
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Re: Kirigami Shapeoko

Post by akhlut » Thu Aug 21, 2014 12:43 pm

This is really, really nice. I think this is going to be needed for my re-build.

secretspy711
Posts: 175
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Location: Colorado

Re: Kirigami Shapeoko

Post by secretspy711 » Thu Aug 21, 2014 2:55 pm

that is very nice. I keep having a problem with dust collecting on my X axis, then the V wheels roll over it, get packed into the wheels and then it no longer moves smoothly.

did you use this method, and this guy's program to generate the fold patterns?
http://www.franksworkshop.com.au/CNC/Be ... ellows.htm
Shapeoko 2 #5510: 1200 x 500 mm, Makita RT0701

cvoinescu
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Re: Kirigami Shapeoko

Post by cvoinescu » Thu Aug 21, 2014 4:59 pm

I am impressed by the neatness of it, and by the fact that you enclosed the ends and the plate too. I know the cutter helps you fold accurately, but still, it's very cool.
Proud owner of ShapeOko #709, eShapeOko #0, and of store.amberspyglass.co.uk

tbfleming
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Joined: Sat May 31, 2014 12:04 pm

Re: Kirigami Shapeoko

Post by tbfleming » Thu Aug 21, 2014 7:14 pm

secretspy711 wrote: did you use this method, and this guy's program to generate the fold patterns?
http://www.franksworkshop.com.au/CNC/Be ... ellows.htm
I tried his tool, but it produced a complicated pattern that was hard to fold. I tried it and 2 other types of folds and settled on an old-style camera fold; it was the easiest.

secretspy711
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Re: Kirigami Shapeoko

Post by secretspy711 » Thu Aug 21, 2014 8:15 pm

I agree, his is a bit difficult. I've just tried a test piece by printing a pattern from his program on a regular sheet of paper and it was a little tricky to get right. I think something a little stiffer like cardstock or polypropylene sheet as he did, would probably result in a better bellows than what I just made. The fact that his are "mathematically optimized!" got my inner-geek excited.

Also maybe it's worthwhile to mention here for anyone else that is considering bellows but is worried about reducing their cut area because of the bellows compressed thickness, then one could try a tapered bellows which will fold up to a thinner stack.
Shapeoko 2 #5510: 1200 x 500 mm, Makita RT0701

tbfleming
Posts: 89
Joined: Sat May 31, 2014 12:04 pm

Re: Kirigami Shapeoko

Post by tbfleming » Sat Aug 23, 2014 1:19 am

Here's the final result:
yyy.JPG
yyy.JPG (66.8 KiB) Viewed 5927 times
The bellows don't seem hurt performance; I'm seeing insane rapids with GRBL 0.9g like Chamnit reported. I'm hitting that annoying Y makerslide resonance at around 15,000 - 20,000 mm/min, but it goes away at higher speeds. Maybe I'll add a resonance damper. Everything is stock (full kit) except the bellows, cables, and connectors.

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