How many of you have 3d printers?

@spyder

When a print is finished the bed moves forward to rest on the end stop but is there a way to make it move towards the back at the end of a print since this is going on the robot I was thinking it might keep busy hands from being able to grab a hot print from a hot bed in haste?thanks in advance. ?

@duce-robot

I have an idea that should probably work, but I'm not home right now to give you a detailed answer

First i need to know what slicer program youre using. Many slicers will allow you to insert commands before a print, in the middle and after

Gcode is actually a program that you can read, write, and edit, so if your slicer dosen't allow it, you could either manually edit the gcode, or there are other options

Did you get octoprint ?

@duce-robot

See: https://www.reddit.com/r/3Dprinting/comments/2ok7nz/endofprint_gcode_for_moving_extruder_out_of_the/

@spyder

I did not yet but that is going on now but I want to get it on the raspberry pi that is on the robot if that is possible if I have to get the pi 4 I will if the 3 b plus won't work getting very close to a first print I guess the cube is an obvious first choice or the tug boat I will try it on its default settings first I also want to double check all wiring and a thing for another time the LCD I want to put prints to an SD card can that be done from octoprint ? I just want to get some small easy popular prints just the am top ten hit's lol going for the most popular one's within reason for a beginner .again thanks in advance. ? maybe I'll have some video of it but I can't figure out how to get it on to here .but it will be on YouTube for forum goers to see. I hope .

@triform

Thomas s has a video on how to speed up the print to optimise the speed for ramps 1.4 if you have that board .the code I will try but that is a slippery slope for me but I'm trying to learn this thing still 

@duce-robot

Get it printing first 🙂

@duce-robot

This is working on my printer. It turns everything off, and moves the head up and to the left, and the bed toward the back. I've included explanations for each line...

The problem with using my gcode on your printer is that my printer's 0,0 is front left, so, when I set coords for 0,0, that puts the bed all the way to the back. Yours might be set for 0,0 being center, in which case, the bed will only move halfway to the back

Where is your 0,0 ?

;End GCode

M104 S0 ;extruder heater off

M140 S0 ;heated bed heater off (if you have it)

G91 ;relative positioning

G1 E-1 F300 ;retract the filament a bit before lifting the nozzle, to release some of the pressure

G1 Z+0.5 E-5 X-20 Y-20 F{travel_xy_speed} ;move Z up a bit and retract filament even more

G28 X0 Y0 ;move X/Y to min endstops, so the head is out of the way

M84 ;steppers off

G90 ;absolute positioning

;{profile_string}

@triform

Yes I have to go back into the firmware double check everything thermistor settings for bed and hot end and pretty much default settings for everything else but a slower print speed to curb as many problems as possible like skipping stepper motors my guess is a very hard failed first print but we will soon see?

@spyder

I think this may work I'm going to power it soon but keep my finger on the switch I have no idea what this thing is going to do. But it will be entertaining to see I'm sure I want to make a video of it in any case it won't be anywhere near the robot on initial start up to avoid a potential thermal event of sort's.

@triform

When hooking up MOSFET board do I still have to hook up the other 2 power wires to the ramps board from the power supply ? I was just thinking of this before powering up.

Posted by: @duce-robot

@triform

When hooking up MOSFET board do I still have to hook up the other 2 power wires to the ramps board from the power supply ? I was just thinking of this before powering up.

D8 on the ramps I think BUT I would google "heated bed mosfet board wiring ramps" and look for tutorials and examples to be sure.

@triform

Yes I just did this and yes d8 for bed and d10 for hot end and 12 volt to board but I only have six outputs on my power supply I need 8 I guess I should for go the hot end for the bed because it uses more power. But I would really like to use both.

I finally bought a Prusa MINI+ to build out some robot parts and the precision is amazing.  I like working with hand tools but I may never go back 🙂  If it wasn’t for the fumes I think I could watch it for hours.

While working through the “3D Printing and Modeling for Beginners” course that comes with the MINI+ I noticed this cool feature in the Prusa slicer.  The slicer will let you identify a layer to pause the printer on.   The idea is to use it to change filament color or add magnets or whatever.  So I used it to insert some #2-56 bolts into a robot chassis and it works great.

After experimenting a bit it seems that the printer pauses before printing the layer you select, so I set the slicer to stop one layer above that to play it safe.

Tom

PS   Sorry about the quality of the photos, it looks a lot better on my laptop.

Would love to be able to justify and afford a 3d printer 🤢 

Your photos look fine with a right click Open link in new window selection.

@robotbuilder It's not the price of the printer, it's the filament.