FoldaRap Buyers Guide
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This project was for myself, as I needed a RepRap that is easy to carry around and for the challenge of making a folding 3d-printer. But I believe in open-source and sharing and all the revolution behind that. Thus I try to well document it, in case others want to make one; to acknowledge all the things we own to those who went before, and to encourage those who come after to do the same.
On a more long-term view, I didn't planned to create a company out of it, I hoped to see it grow on itself in the wild, just by indicating how to source it, because I have more fun in designing stuff than marketing it. And after 500 machines and few other models for the industry, I'm back to that principle :)
"Ideas are like living things and breed happily in an open-source context" as I like to think ^^ (on the same spirit I like this comment from User:Adrianbowyer)
Contents
Bill Of Material (BOM)
2017-10-14 : With the FoldaRap 3.0 I will maintain the new inventory in a Libre-Office datasheet. You can find it the github repo (here). I will progressively archive the BOM of the previous version below.
2015-07-20 : the BOM should be updated to reflect the latest changes, but there is only minor differences in hardware/vitamins between the 2.1 and the 2.5 version :)
Total end cost for 1 machine : ~400-600€ when you include all taxes and shipping costs. Make group orders with friends if you can.
Hardware
5 springs / extruder (2), bed (3) - RS751483 or see Springs 1m spiral wrapping band for tidying the wires - RS227874 7 6,35mm ferule - Radiospare to crimp the cable for the plug and the switch 1 direct drive gear - Maritime-models (see Drive-gear) 1 aluminium bed plate 150mm x 140mm(4mm thick)
Electronic
1 standard male plug IEC C13 C14 - RS 5392045 1 standard female cable - EU/C13 - UK RS6266739 / US RS7316163 1 big blue switch - RS 5287858 1-2 small fan (40 x 40 x 10 mm), for the hotend (can be bought with one) and the extruder motor - RepRapWorld or see Fan 1 100k thermistors - Mouser 1m of 18AWG wire (200mm red, 200m black, 150mm green) for the switch/plug/psu - Read also WiresAndConnectors 10m of 26AWG (3.6m red, 3.2m green, 2.0m blue) for the sensors and fans 1 kapton film heater
1 Minitronic board [1] 1 USB cable A to B [2] 1 12V 12.5A power supply
Laser cut parts
Have them cut at a local FabLab/Makerspace. Or order them from my Ponoko/Sculpteo hub (need to be updated).
The bed can also be made of acrylic in case of a non-heated bed.
Printed parts
If you can print your own parts it will take ~500gr.
Material : PLA
Because some parts act as sliders on the aluminium profiles. You can print the other parts in what you want.
Recommended settings
- Infill : 25-30%
- Infill pattern : hexagonal
- It is advised to have a well calibrated machine (+/- 0.05mm on measured parts) : http://forums.reprap.org/read.php?282,159683
I recorded this little video where I'm playing with some parts freshly printed, to show what to expect about the tight tolerances.
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The part that slide under it's own weight (16gr) have been slided back and forth a few time.
