Looking for a y-splitter for the hot-end-fan for a custom laser upgrade..
 
Notifications
Clear all

Looking for a y-splitter for the hot-end-fan for a custom laser upgrade..  

  RSS
Andrew Biss
(@andrew-biss)
Active Member
Looking for a y-splitter for the hot-end-fan for a custom laser upgrade..

As title says, I am in the process of adding a laser engraver module to my Mk3s. I won’t go too in detail until I’m certain I can get the software side to work. I have everything figured out on the hardware side except this one cable.

I’ll be controlling the laser with the PWM signal for the hot-end fan. So I need to run another cable from the fan’s port on the controller board. I really don’t want to splice into the existing wire. There isn’t much slack on the wire, so it’s a little risky. And it’s sloppy to me. I would rather make things really difficult and run a separate wire.

I don’t think Prusa makes any sort of spares since the cable comes directly out the fan. The connector is a 3-pin Molex 50-57-9043. It seems obscure or custom even. Its for sale on Mouser but then I’d have to buy the custom crimper etc.

Ideally there’s another printer or really any sort of hardware using this connector and maybe has spares of the cable that I can Frankenstein? I wouldn’t mind splicing spare cables. Or even if they sold flying leads?

Sorry for the long post. Thanks for the help!

 

 

Posted : 22/11/2021 3:05 am
Dan Rogers
(@dan-rogers)
Noble Member
Sheesh. Cut the wire. Splice and go.

After you get done with the glutton for punishment act ... get a soldering iron.

 

Posted : 23/11/2021 11:59 am
Andrew Biss
(@andrew-biss)
Active Member
Topic starter answered:
RE: Looking for a y-splitter for the hot-end-fan for a custom laser upgrade..

I have a soldering iron, ready to solder! How could that make this easier?

Posted : 23/11/2021 7:46 pm
Dan Rogers
(@dan-rogers)
Noble Member
Simple. Cut the fan wires and splice in a fork.

Splice in a fork.  I like that end solution better due to lower complexity.  Running new wires through the loom ultimately stiffens the loom, which will eventually be too stiff to pass calibration tests with too many wires through it.

Posted : 24/11/2021 7:47 am
Share: