Sagging printhead assembly

Hugues · Post by **Hugues** » Wed May 29, 2013 8:48 pm

Been printing at 240c the past few days, don't know if this could be the cause of my problem,

as you can see in the picture below, my print head is sagging towards the bed. The air exaust is now a little lower than the tip of the extruder and is touching the last layer being printed

What are my options ? print that part in ABS?
or scrape a bit of the exaust so it does not touch ?
But the extruder axis is not completely perpendicular to the print bed anymore, wonder if this is a problem !?

dognotdog · Post by **dognotdog** » Thu May 30, 2013 12:56 am

It definitely won't help quality, if you print like that. Print a new carriage out of ABS, while you still can. BTW, is your fan wired to 5V only? Maybe putting it to 12V will prevent even PLA from sagging further, due to the more effective cooling.

Hugues · Post by **Hugues** » Thu May 30, 2013 6:13 am

dognotdog wrote:It definitely won't help quality, if you print like that. Print a new carriage out of ABS, while you still can. BTW, is your fan wired to 5V only? Maybe putting it to 12V will prevent even PLA from sagging further, due to the more effective cooling.

i'll do that, thanks.

As for the fan voltage, it's a Felix 2.0, pre-built, so i don't know if 5 or 12v, but i'll measure it tonight.

i remember reading about this on the forum, but can't find the thread anymore.

Could someone give me some pointers on where to get 12volts from the board for the fan ?

thanks

Sündi · Post by **Sündi** » Thu May 30, 2013 8:42 am

I have had the same problem, but after I printed the carriage out of ABS the problem was solved

killejano · Post by **killejano** » Thu May 30, 2013 11:42 am

I had it worse. Seems to me that printig without the part cooling fan leads to hot air rising to a pocket in the carriage because nothing else seems to overheat or fail. Possibly a hole in the pocket might help some.

Hugues · Post by **Hugues** » Sun Jun 02, 2013 10:27 am

So i'm gonna print the whole carriage out of ABS,
Guillaume has posted the gcode here
http://www.felixprinters.com/downloads/ ... ruder_2_0/

But as i will be using ABS, i defintely need to add a brim before printing, that means i need the stl file of this part, or Guillaume has to slice it and add a brim and send me the gcode,

Anyone has the stl file ?

Guillaume are you able to add a brim to your stl file, (using the new skirt.py file linked http://www.felixprinters.com/forum/view ... =346#p2277) ?

angryangel · Post by **angryangel** » Sun Jun 02, 2013 10:40 am

i also plan to use ABS so i also need a printhead of abs

so i need the same files

thanks

YouTube · Post by **gfeliksdal** » Mon Jun 03, 2013 5:25 pm

Hi Hugues,

Here are the STLs for the base.

Extru_base_v10_F2_0.STL: (391.39 KiB) Downloaded 187 times

Extru_base_pt4_V3_F2_0.STL: (139.24 KiB) Downloaded 163 times

Extru_arm_v6_F_1_5.STL: (105.55 KiB) Downloaded 165 times

Extru_base_pt2_v7_F2_0.STL: (703.59 KiB) Downloaded 160 times

On the electronics board there is a soldering jumper.

When you remove that the voltage to the main fan will be 12V. Now with the jumper on it is approx 5V.

Kind regards,

Guillaume

angryangel · Post by **angryangel** » Mon Jun 03, 2013 6:05 pm

hi Guillaume
thanks for the Base STL kann you post the other STLs? i would like to print the whole head of ABS

YouTube · Post by **gfeliksdal** » Mon Jun 03, 2013 8:49 pm

Please, check my previous post for the requested STL's

Sagging printhead assembly

Sagging printhead assembly

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