StrongPrint
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Release status: Experimental
| Description | Metal 3D printer inspired from Metal Delta RepRap v1
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| External Link | (none)
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Contents
Background
Inspired by the Metal Delta RepRap v1 to propose a very affordable metal 3d printer but it is based TIG (GTAW) process which has the potential to be more precise and it allows to use a cheap low power inverter MMA welding power source. The objective for this printer is to be below 1000€ cost & 2mm weld thickness. It has been developed in two month thanks to the support of the Artilect FabLab in toulouse. It is not yet operational but it is able to deposit metal on a steel plate.
Some videos are available online:
- Arc ignition test by the liftarc method: YouTube: StrongPrint - Arc initiation Test
- Metal deposition test with three layers: YouTube: StrongPrint - 3 layers Test
All documents required to build this printer are available on thingiverse
General Design
The printer is based on the Enlarged Rostock which was based on the Rostock from Johann
Document under construction, more details to come soon...
Bill Of Materials
Components On the machine at present: (Cost ~600€)
- Welding source: GysMi 80p 120 (any inverter based MMA power source should do, it might be advised to go up to a 130A one ) (120€ to 250€ for simple MMA sources) - Round Shaft: 12mmx1000mm Z-12-1000A x 6 -> 90€ Obtained From HPC Europe - Linear Bearings 12mm KB-12-WW x 6 -> 67€ Obtained from HPC Europe - Belt 2m T2.5 x3 & Pulley 16 tooth x3 -> 75€ + 19€ Obtained from eMotion Tech - Gen 7 V1.4.1 board x 1-> 145€ (the more recent Ramps FD + arduino due might be a good choice ) - Nema17 400 step/turn x3 -> 47€ Obtained from Selectronics (for the 3 axis) - Nema17 200 step/turn x1 -> 16€ eMotion Tech ( for the extruder ) lower steps is better for rapid retract - Carbon rods -> diam 8 Kite frame from Decathlon - Donut magnets x12 -> 12€ ref: R-15-06-06-N from Supermagnete - Steel balls diam 12.7 x12 -> 4€ ref:K-13-N from Supermagnete - USB-A Female plugs x4 -> 4€ from Electronique-Diffusion - USB-B Female plugs x4 -> 4€ from Electronique-Diffusion - USB printer Cable x4 -> 12€ from Electronique-Diffusion - 9pin SubD conector Male & female -> 2€ from Electronique-Diffusion - Bearings x5 -> From roller blades 5€ - Recuperated Stoneware tile -> 0€ (Not adequate a conductive material will be better to reduce deformation)
3D Printed parts ABS only due to the severe environment:
- Motor_End x3 -> http://www.thingiverse.com/thing:71687 - Idler_End V1.2 x3 -> http://www.thingiverse.com/thing:143186 - Bed x2 -> http://www.thingiverse.com/thing:74119 - MiniStruder x1 -> http://www.thingiverse.com/thing:310705 - Magnetic Carriage x3 -> http://www.thingiverse.com/thing:303637 - Ball Holder for Magnetic Bearing x12 -> http://www.thingiverse.com/thing:305411 - Magnetic Platform Tool -> http://www.thingiverse.com/thing:305118 - SR17 Torch Holder x1 -> http://www.thingiverse.com/thing:319442 - Nozzle Holder x1 -> http://www.thingiverse.com/thing:313475 - Springy Clip x6 -> http://www.thingiverse.com/thing:312016 - Tungsten level Cup x1 -> http://www.thingiverse.com/thing:326091
Conponent identified for the planned upgrades:
- Welding plate -> Thick copper or aluminium plate - 24V power supply -> for solenoid valve & motors - 24V solenoid valve -> for argon managment - 10K Digital potentiometer -> AD5175 or similar to control welding power source - Inductive Curent sensor -> to measure welding current - Optocouplers -> to isolate electronics from the welder control to the printer control - HF ignition system -> Coil, condenseurs, etc...
Head design
