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EchoRap Rev1

by StephaneRousseau, published

EchoRap Rev1 by StephaneRousseau Oct 17, 2012

Description

The EchoRap is a simple and robust RepRap designed by Robotic Sequencing in Montreal’s first and only Fab Lab, ÉchoFab. It’s a low cost and simplified version of the original RepRap using tubes instead of threaded rods for a different geometry. The design is licensed under Creative Commons Non-Commercial, so if you have acces to a 3D printer, you can print one for yourself or to give to a friend. Files to print parts are available on Thingiverse.

The design allows builders to build it as a RepRap or a RepStrap.
All parts can be printed or cut.
Assembly of the structure is very easy: tubes and simple coupling.
The X Y Z axes can be enlarged using longer tubes and rods.
Current table size allows the use of standard Mendel or Prusa heated beds.
Gen7 Electronics, PrintrBoard rev D has been tested and works well. Other RepRap electronics can also be used. All the sofware is Open-Source.

SPECIFICATIONS

Overall Dimensions: 510mm x 585mm x 540mm (20.1in x 23.1in x 21.26in)
Weight: 8.18kg (18lbs)
Usable Print Area: 220mm x 220mm x 200mm (7.9in x 7.9in x 7.87in)

Note: REV 1 add stiffness to the X axis by replacing the 2 P4Z Top Mount with 2 extra P3Z with 608zz bearing to add stiffness to the X carriage.

Recent Comments

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Would you please post information regarding the ABS coated pipe.  I can only find it in China.  Who are the good manufactures?  Who are good resellers? 

Hi Justin,

It's ABS coated steel pipe. It's inexpensive, solid and have a nice look. You can have different colors:-)

What kind of tubing was used?  
In China some people are using ABS coated steel pipe in place of extruded aluminum.  Is that what this is?
I tried making a printer out of EMT conduit, but the pipe was not as rigid as extruded aluminum.  

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Instructions

BILL OF MATERIALS
Items / Quantity

Structure
Y axis Tube 1.125" 14" / 2
X axis Tube 1.125" 15" / 2
Z axis Tube 1.125" 15" / 2
Top Tube Handle Bar 1.125" 23" / 1
Tube Joint / 18

EchoRap Specific Parts
P1Y NEMA 17 Mount / 1
P2Y Bearing Holder / 1
P3Z NEMA 17 Mount / 4 (Rev 1 change quantity from 2 to 4)
---- Rev 1 removed part: P4Z Top Mount / 2 -----
P5X NEMA 17 Mount / 1
P6X Right Mount / 1
P7 Extruder Mount / 1
P8 Table / 1
P9 LM12UU Holder / 8
P10 Adaptor 1.125" to 12mmx0.5" long / 12

Moving Parts
12 mm Rod 13" / 4
LM12UU Linear Bearing 12x21x30mm / 8
608ZZ Bearing (to build structure, extruder not counted) / 4 (Rev 1 change quantity from 2 to 4)
5/16 18TPI Threaded Rod 13" / 2
Pulley GT2 36 teeth, 6mm width / 2
Belt GT2 497 teeth, 6mm width / 2


Hardware
M3 X 12mm Socket Bolt (motor mount) / 20
M3 X 25mm Socket Bolt (P1, P2, P3, P4 attach) / 6
M3 Hex Nut / 6
Multipurpose Miniature Tie 102mm / 100
5/16 Nut / 4
M8 X 30mm Bolt / 2
M8 Lock Nut / 2
M8 Washer / 4
M8 Large Washer / 4
L-Shaped Metal Mount 50mmx50mmx12mm / 2


Electronics
NEMA 17 Stepper Motor 62 oz-in / 5
PrintrBoard rev D / 1
Extruder Wade / 1
Hotend J-Head / 1
PCB Heated Bed MK1 or more / 1
ATX Power Supply / 1
Motors Cables / 5
Other Cables / 7

DOCUMENTATION AND SOFTWARE
Files to make one
Pre-order
échoRap Wiki (in french)
Firmware for PrintrBoard Rev D on GitHub.
Firmware for RepRap Gen7 Electronic v1.3.1 on GitHub.

Comments

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justin_treon on Nov 13, 2012 said:

What kind of tubing was used?  
In China some people are using ABS coated steel pipe in place of extruded aluminum.  Is that what this is?
I tried making a printer out of EMT conduit, but the pipe was not as rigid as extruded aluminum.  

StephaneRousseau on Nov 13, 2012 said:

Hi Justin,

It's ABS coated steel pipe. It's inexpensive, solid and have a nice look. You can have different colors:-)

alizier21 on Nov 3, 2012 said:

 i just notice that the P6right mount does not have a hole for the bearing. did you just drill a hole after printing?

StephaneRousseau on Nov 3, 2012 said:

Nice observation, thanks :-) I uploaded the correct P6RightMount with the hole for the M8 bolt to hold the bearing.

thecrazy on Nov 1, 2012 said:

BTW there is another Fab lab/hacker space in MTL its called Foulab.

StephaneRousseau on Nov 1, 2012 said:

Yes, there is Foulab a nice hacker space, they have a nice rodstock working. And there is Eastern Bloc that have a lab for members. These are the one I know.

alizier21 on Oct 21, 2012 said:

Thanks . .great stuff . .

alizier21 on Oct 21, 2012 said:

 hi, kindly upload the p7extruder mount. thanks. im trying to convert my filament spool holder into a echorap :)

StephaneRousseau on Oct 21, 2012 said:

Hi,

It's uploaded :)

SimCity on Oct 17, 2012 said:

hmmm that frame reminds me of my old RepStrap built from the legs of a draftsman's table. Gives me some ideas to possibly resurrect it

BenRockhold on Oct 17, 2012 said:

That's attractive looking. I have to ask though, if neither the Z guide rods nor the threaded rods are attached to the vertical tubes, what are the tubes for?

StephaneRousseau on Oct 17, 2012 said:

Hi Ben,

Tubes are there for transportation, support filament spool and there is optional part P4 that rigidity to the z axis.

Thank you for your comment.

Stephane

StephaneRousseau on Oct 17, 2012 said:
BenRockhold on Oct 17, 2012 said:

The link to the video is not working for me, so here is teh full URL: http://www.youtube.com/watch?v...

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