Ended up with selling this huge thing. Due to some more professional work no more time for it...Gained a lot of experience with this, I highly recommend to do this if you want to go further in this field...
- Jan 2014
Some new projects are calling...need space, and, of course money...
I sell this working Big Brad as an experimental platform fully equipped with now Bowden Extruder, 700W heated printbed, just plug it in and print... all files of course
29.Oct..Added video of working BigBrad after adding a heated glassbed...and my mistake, corrected dates here...I am always ahead of time....;-))
- Oct. Added heated printed: 6 mm safety glass with two 360W het pads 220V switched by a solidstate relais. Fixed it with some selfmade clamps to the former print beds. Excellent results with 65 C, PLA sticks as hell. Now need some improvement on the z-axis due to the weight of the new parts...
New y-Carriage with plate for endstop mount and some enhancement in structure
AddedAdded 11. Oct Redesign of extruder carriage due to some size issues, print it in ABS at 245 C to have a strong bond with raft & support. Also reworked Rod-Holder with pulley to make it stronger.
Added 3. Oct. Redesign with parts in 3D more simpel setup less
Uploaded STL and Rhino files...
If you start building one let me know
Just finished my 3D printer...real BIG, gives you a print area of 46cm (x), 32 cm (y) and a height of 42 cm...can be tuned to some more cm because of quick design of parts...non-heated print beds, PLA sticks perfect with raft AND my wifeys hairspray (use lot of it..). No warping then...
Powered by a standard RAMPS 1.4 , LCD Graphics with SD for standalaone print, chinese small NEMA17, (2x Y-Axis, 3x Z-Axis, 1 x-carriage, 1 extruder direct drive (thanks terenceang, http://www.thingiverse.com/thing:93695) ..., ATX-power-supply, 0,5 nozzle, 1,75mm filament, mechanical endstops.
Some adjustments made to Marlin (thanks...)
All parts are my own design, printed on a makerbot clone in PLA, except X-carriage and extruder parts are in ABS due to some heat issues..
No fans yet, even Nozzle does not need one...stepper motor gets warmer than nozzle-holder....
Recode Marlin to use a ST board with color grahis and touch screen
adjustable printbed, maybe a servo-driven nozzle
maybe heated printbed
new X-carriage (to get some more cm)
Bowden extruder (lighter X carriage for more speed)
refine all other parts to look "nicer"
My testfiles for adjusting are included
Work is to be continued, if you are interested ...email me!