Print The Porto

A collection of tips about 3d printing.
0

Belt tension

Ever wonder how tight your belts should be on your printrbot or any 3d printer? Well thanks to redditor /RememberToBackupData, somebody posted a good way of doing this.

I use a guitar tuner app to help me get my belts consistently tight. I traverse the stage or arm so that it's furthest away from the belt tensioning screws, and then I strum the belt and ballpark the sound around 150 hz. Do note that I just picked 150 hz arbitrarily; I couldn't find any advice about how tight a belt should be except the eminently helpful, "Not too tight and not too loose." I think the design of the Simple makes perfect belt tightness unimportant, but I feel that having a benchmark for consistency is a good idea.

The guitar app "Chromatic Guitar Tuner" is on the apple store: https://itunes.apple.com/au/app/chromatic-guitar-tuner-tune/id662890455

Categories: tips

Tags: tips, printrbot simple metal

Comments: No comments yet

0

Notes on printing with Ninjaflex

Always use at least a minimum of 30% infill, the higher the better.

Print at a slow speed: 20-30mm/sec (1200-1800mm/min for simplify3d).

Extrude at a temperature between: 210-225°C.

Not really needed, but you can have the platform bed temperature set to: 20-50°C.

To reduce stringiness, set retraction for 1.75mm filament, to 2-3mm. Go with the lower amount if using an Ed3. Another option is to turn on the cooling fan.

When switching filaments (ABS or PLA) purge thoroughly before starting a print. Preheat, using a lower temperature 180-200°C.

If you need to glue ninjaflex, 3M trim adhesive and Gorilla Glue provide moderate bonding. The best way to connect NinjaFlex parts is with a hot knife welder.

Lastly, Never, Ever print on PEI, ninjaflex sticks like crazy glue. Use painters tape and make sure to wipe thoroughly with alcohol.

A nice site with some good info on printing with ninjaflex:

https://talpadk.wordpress.com/2013/10/10/3d-printing-using-ninja-flex-filament/

Categories: Filament, Ninjaflex

Tags: Filament, Ninjaflex

Comments: No comments yet

0

Purge and nozzle wipe starting gcode

Use this gcode to purge and wipe filiment before printing.

Simplified version

M107 ;turn off fan
G28 X0 Y0 Z0 ;home X, Y and Z axis end-stops
G29 ;initiate z-probing
G1 X0 Y0 Z.10 ;move to corner of bed
G92 E0 ;zero the extruded length
G1 F200 E3 ;extrude 3mm of feed stock
G92 E0 ;zero the extruded length

Advanced wipe and purge

M107 ;turn off fan
G28 X0 Y0 Z0 ; home X, Y and Z axis end-stops
G29 ; initiate z-probing
G0 X0 Y0 F9000 ; Go to front
G0 Z0.15 ; Drop to bed
G92 E0 ; zero the extruded length
G1 X40 E25 F500 ; Extrude 25mm of filament in a 4cm line
G92 E0 ; zero the extruded length
G1 E-1 F500 ; Retract a little
G1 X80 F4000 ; Quickly wipe away from the filament line
G1 Z0.3 ; Raise and begin printing.

Categories: gcode, printrbot simple metal

Tags: gcode, printrbot simple metal

Comments: No comments yet