FoldaRap Buyers Guide

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FoldaRap Documentation

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)

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

Foldarap hardware-kit.jpg

6  20x20mm beam 6mm slot 200mm - Motedis or see Aluminium profile
6  20x20mm beam 6mm slot 300mm
54 M4 T-nut for 6mm slot - Motedis
54 m4x8 round head bolt - Fix'n Vis Round Head Bolt
4  m5 nylon nut / Z-rod (4) [1]
3  m3 nylock nut / bed leveling (3) nylock nut
15 m3 nut / hinges (2), bed (3), Y-belt-clamp (2), extruder (2), plug (2), psu (4) - Fix'n Vis Nuts
8 m3x6 grubscrew / x-slider (4), pulley (4)
14 m3x8 bolt / Z-motors (4), Y-motor (2), psu (2), male plug (2), board-mount (2), hotend (2) - Fix'n Vis Bolts
8  m3x10 bolt / hotend (4), y-belt-clamp (2), extruder (2)
1  m3x16 bolt / extruder (1)
4  m3x20 bolt / hinges (2), Y-idler (1), extruder (1)
5  m3x25 bolt / hotend-holder (2), fan-holder (1), (extruder 1), z-endstop (1)
8  m3x30 countersunk bolt / x-slider (4), bed (3), z-endstop (1)
2  m3x35 / extruder (2)
2  230mm threaded rod m5 - Fix'n Vis
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
2  5mm to 5mm flexible coupling
3  linear bearing, LM6UU or if you can Igus RJMP-01-06 - See Bearing
2  300mm smooth rod 6mm - (can be salvaged from usual scanners and printers) or see Smooth rod
5  603zz bearings / X-slider (2), Y-idler (2), extruder-idler (1)  - See Bearing
1  250mm T2.5 belt 5mm wide - RepRapWorld or see Belts_and_Pulleys
1  600mm T2.5 belt 5-6mm wide
2  T2.5 pulleys - Belts_and_Pulleys
330mm PTFE Tubing for bowden extruder (2mm inner diam. and 3mm outer) - See Bowden
2  Pneumatic fittings for 3mm tubing, with M5 thread - See Bowden or emakershop / I'm using the MA12-03-M5 but others can work
1  direct drive gear - Maritime-models (see Drive-gear)
1 aluminium bed plate 150mm x 140mm(4mm thick)
1  roll of kapton - See Kapton Tape#Vendors
20 zip-ties

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 [2]
1 USB cable A to B [3]
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.

FoldaRap bed-plate 1.1.jpg

How to replicate a FoldaRap !

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

Foldarap precision-needed.jpgReprapworld-black-print2.jpg

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.