Hi All,
Since completely delivering our Kickstarter backer pledges we have delivered another 380+ Retractable Purge Mechanisms. The community is growing fast! We’ve released the STL and STEP files to Thingiverse and PrusaPrinters. That ‘Thing’ has since received over 16K views and 870 downloads!
What’s new?
The original V1.0 kit is still working well, but we’ve released many updates to gcode purge script, including a huge reduction in the X motor current (thanks @jens-giesser), so make sure you update your scripts.
There is now support for ‘Tip shaping’ in PrusaSlicer with an automatic post-processing script written by VintagePC and Gnat and published on Github here. Many of you in the community have also contributed variants of the RPM parts so that there are more than 10 3D printers now supported.
Here are a some community prints you may not have seen:
How can BigBrain3D help?
We want everyone of you to have success using the new purge mechanism. If you need help with setting up the kit on your 3D printer, or if you would like to share your experience with us, then please reach out to us. We are active on our Forum, Thingiverse, and directly via email: [email protected]. The community is increasing in activity and you can often get a response from another member faster than us on the forum 🙂
Your feedback matters. Because of you this entire project has improved beyond anything we could have done by ourselves. More printers are supported and the entire process works better because of your help.
Thank you to everyone who has been helping their fellow community members. And thank you for the posts we’ve seen about successful makes and MultiColor prints completed using the purge mechanism.
How can You help?
There are a couple challenging areas that we could use your help with:
1)One of the best things you can do is share your MultiColor prints on Reddit/Facebook/Thingiverse. This will naturally promote the project and help more users find out about this new way of purging.
2)Support for Canvas. It’s has been learned that Canvas cannot support the Retractable Purge Mechanism without a code change. Writing to Mosaic and nicely suggesting that you would also like them to support the Retractable Purge Mechanism in Canvas would go a long way.
3) Please subscribe to us on YouTube and ‘like’ us on Facebook. If we get another 6 subscribers on YouTube then we can have a custom URL!
What’s next?
We are working on supporting other printer variants, like the Mosquito hotend, and testing a low height version of the ‘Cage’ for better clearance.
We’re going to try and send an update every month.
Happy 3D printing!
BigBrain3D =D
Mosquito 100% would be perfect, as that’s what I’ve got. I haven’t installed my RPM yet, so if there is an update for it, I’ll wait for that to come out first
We will keep you posted.
There is a Mosquito hotend adapter now.
https://www.thingiverse.com/thing:4152742
Where are the updated gcodes?
The updated script is in the google drive here:https://docs.google.com/document/d/1G0NUKMWZjaSbpFcPbRHbVU0qk3r635XV2MVBC-Y9qEk/edit#heading=h.fz417kz2jr2t
Or on Thingiverse.com here (Gcode additions (PrusaSlicer) section):
Awesome! I’m struggling a bit to get my setup working with my Mosquito, so I can’t wait for that update.
We will keep you posted.
There is a Mosquito hotend adapter now.
https://www.thingiverse.com/thing:4152742
Mine’s all set up, just need to do some testing. question; where can I find the updated gcode purge script?
Joe
The updated script is in the google drive here:https://docs.google.com/document/d/1G0NUKMWZjaSbpFcPbRHbVU0qk3r635XV2MVBC-Y9qEk/edit#heading=h.fz417kz2jr2t
Or on Thingiverse.com here (Gcode additions (PrusaSlicer) section): https://www.thingiverse.com/thing:4048193
In my very first print, the very first blob got stuck to the main arm where the blob gets created. Can you help me troubleshoot this? Is there a way I can adjust the size of the blob that gets created?
The size of the blob should not need to be adjusted. If the script and installation are correct then a 40mm blob will fit. Here is a forum post where we go through diagnosing the failure to release the blob. Please read through this post as it will give you an idea how this should type of issue should be diagnosed. There are videos and photos to help too.
Just found this and LOVE the idea! Are there plans to make this compatible with the MK3S Bondtech Mosquito upgrade?
https://www.bondtech.se/en/product/prusa-i3-mk3s-mosquito-extruder-upgrade/
If it matters, My MK3S is on the bear frame. I’m more than willing to help out with testing. Are STEP files available of the original?
Thank you for the compliment 🙂
There is a Mosquito hotend adapter here.
There is a Bear frame adapter too.
Yes you may find the STEP files here.
@BIGBRAIN3D – Thank you for the prompt response! Can’t wait to get this tuned in.
Hello, I don’t find the “How to build” the system on my Prusa. I was sure there was a video on YouTube…
Hello Patrice,
I think most of those resources should be on this page:
https://www.bigbrain3d.com/homepage/retractable-purge-mechanism/
Kit assembly video:
https://youtu.be/qnWlOrqReM0
PrusaSlicer gcode modifications:
https://youtu.be/KRk0z6-X93A
Does that help?
In the PrusaSlicer gcode modification I see that post the pre_toolchange_prusai3 g.code into toolchange,
But where do I post the Post_Toolchange_prusa_i3 code?
Hi Christofer,
You need to put all the code, the entire pre AND post toolchange gcode, into the ‘Tool change G-Code’ section.
The ‘T’ command separates the pre and post. But they still go into the same section.
Here is a video showing what I mean: https://www.youtube.com/watch?v=KRk0z6-X93A&feature=youtu.be
I hope that helps 🙂
Geeetech A20T 3D Printer three colour
what extra items need to be printed please
and will it work with cura 4.8.0 would have to change coding
very new to this coding 🙁
we just want to print things for fundraising and don’t want the waste if possible
thanks for any help
Hallo
Ich benutze einen MK3S mit MMU2S und den Prusa Slicer 2.4.2
Wenn ich den G-Code von ihnen hier in meinen Slicer einfüge bekomme ich immer die Fehler Meldung.
Es wurde ein werkzeugweg außerhalb des Druck Bereich erkannt.
Womit das Slicen fehlschlägt .
Hello I am using an MK3S with MMU2S and the Prusa Slicer 2.4.2
When I paste the G-code of them here into my slicer I always get the error message.
A toolpath outside the pressure range was detected.
Which causes the slice to fail.