Ahhh so close  

Re: Ahhh so close

Aww jeez. I've heard a lot of people's spool holders snapped when they tried to put it on. Maybe a first print? I'm waiting on my mk3 and am lucky enough to already have a couple printers I can use to make replacement parts if necessary, but it sounds like Prusa needs to update their design.

Re: Ahhh so close

According to the manual they have a double spew holder coming out in spring 2018. Hopefully that will be a bit better. I will have to rig something up to hold the spool so I can have a first print 🙂 . (my only 3d printer for now)

Re: Ahhh so close

just glue it with CA glue and put some tape around it to give it support or wrap it with string and soak the wrapped string in CA glue it will act like a splint., try it out if it holds run the print for a new one.

Re: Ahhh so close

Hi there. From the picture looks like you have another small problem - trapezoid nut upside down. Take a look in the manual Section 4, Step 6, for the details. I understand that this is an issue as it limits the travel on the Z axis if not correct.

Re: Ahhh so close

Its for the best, that spool holder sucks!
It is very springy and bounced around a lot on mine, besides it would not accept some smaller 1/2kg spools I have.
I printed this one from ABS and have not looked back, no bouncing and it accepts all of the spools I have.
https://www.thingiverse.com/thing:2026895
Cheers,
Jon

Re: Ahhh so close

When I started to install the spool holder I saw that the fit was too tight so I filed the leading edge on the bottom part of the clip. With this edge rounded I have no problem putting the holder on and off the frame. My other problem was that I have some spools with a smaller hole so I designed and printed a holder that works for these spools.

Re: Ahhh so close

I printed o e of these before my mk3 came, to use on my mk2s. I knew there was no way it would press fit in place.
So I used pliers and a towel to pull the bottom on instead of pushing the arm to lever the bottom in place. That thing is not going to come off in one piece.

I highly advise using pliers not lever force.

Re: Ahhh so close

Hi there. From the picture looks like you have another small problem - trapezoid nut upside down. Take a look in the manual Section 4, Step 6, for the details. I understand that this is an issue as it limits the travel on the Z axis if not correct.

Eagle Eye You're correct and matthew.h24 should take a look at it.

Re: Ahhh so close

Hi Matthew,
glue the spool holder for now and use this G-code to print a new one, I recommend the PETG version:
https://www.prusa3d.com/wp-content/uploads/SpoolHolder_B4_Gcode.zip

Also, you have to turn the trapezoidal nuts on the X-axis upside down. See this step 6 once more:
http://manual.prusa3d.com/Guide/4.+Z-axis+assembly/509?lang=en#s8171

Re: Ahhh so close

Hi there. From the picture looks like you have another small problem - trapezoid nut upside down. Take a look in the manual Section 4, Step 6, for the details. I understand that this is an issue as it limits the travel on the Z axis if not correct.

Ahh thank you for catching that! Will get it fixed as soon as I get home.

Right now I have the filament hung from a post in my basement and seems to be working fine. Still have to get the micro calibration done from the tip to the bed.

RE: Ahhh so close

You're welcome to mine - I printed a spool holder with bearings that works quite well and no longer use the factory holder.

RE: Ahhh so close

@k1mu

Just an FYI, this thread, and this user hasn't been active on the forum in 4 years, and Prusa has been using injection molded spool holders for years now.

Regards

Swiss_Cheese

RE: Ahhh so close

Oops. Following this forum using "Previous Topic" and fell into a time warp. Thanks for letting me know. 🙂