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View Code? Open in Web Editor NEWBeefy Front Idlers (for Vorons)
License: GNU General Public License v3.0
Beefy Front Idlers (for Vorons)
License: GNU General Public License v3.0
Hi Clee, love the BFI parts, already assembled before I saw the symmetrical parts and was going to reprint. Couple of things I noticed:
Going to see if I can get a PR going with at least the first 2 items updated. I'll try my hand at the 3rd as well, but my CAD skills are a bit weak in this department
Seen a few folks mention rubbing on BZI for 2.4 and Doom...never thought anything of it but i have been chasing a persistent z issue that only manifests on my DoomCube with very tiny z moves like a .2mm z hop. After rebuilding and replacing every component in my Z motion system I eventually realized that the rubbing on the Z idlers is very likely the cause.
The issue is that the Z idlers for 2.4 and Doom are modeled using a 9mm idler width of 13mm, however gates idlers are 14mm end to end
In the CAD I can see the opening itself is exactly 14mm because it is expecting the idler to be 13mm which is not correct.
I cant say for sure but I think a majority of Z idlers used are modeled after the dimensions of gates idlers. This causes rubbing and binding if the parts are not sanded.
There is a mod for essentially exactly this issue however it might make more sense to make this the default. Either that or add a note that these are not modeled to gates spec.
https://github.com/clee/VoronBFI/tree/main/usermods/LillianaMirrors/
The BZI carrier for the Voron 2.4 is too snug on my 9mm idlers that were used in my stock Z idlers.
These were sourced a long time ago so this may be a non-issue now. My Idlers are 14.06mm wide and the current carrier printed at 14.09mm. They do fit but are way too snug to move.
I modified the CAD to make one that has a 15mm wide opening for the idler instead of 14mm. The CAD shows the idler is 13mm wide, so I went with 1mm over the size of the idler. I am uploading a ZIP file with the STL and the quickly/crudely done STEP file incase anyone else might need it.
I am currently printing this and will validate it works for mine, I will cross this out once I confirm it works for my idlers.
They fit just as they should.
Hi, there is an issue with idler carrier. Belt moves over idler in direction of z+.
What may cause this issue. Belt is brand new.
The file named with logo has no logo! :)
While there is a detailed list of additional required parts, there are no instructions on how to build these.
In BOM list of BZI for Voron 2.4 you declare
8× M5×40 SHCS
But looking at images, CAD file and real printed parts, it seems that
8× M5×40 BHCS
are instead the right choice.
Btw, it's not the optimal solution, but works also with socket head cap screw.
The 5 mm-or-so "ear" on both sides is really needed on one only - note the stock "Z Tensioner Bracket" A and B styles - and in my specific installation collided with an LED strip mount.
That plus an unrelated brim setting mixup (had internal enabled - no eyebrows!) led me to slice these after a quick hop in OnShape:
In readme for 2.4/Trident, state "5x18MM dowel pin" OR "M5x16 BHCS" as options. for BFI.
Would provide clarity(and prevent impatient Americans from going on hardware store boondoggles for metric dowels).
BFI_Front_with_logo_M3_symetrical_x2.stl
The included STL is without logo
Design allows fools like me to pinch the belt and break parts everywhere on my Micron Plus trying to figure out why my gantry is clicking and binding and moving hard.
Not knowing CAD - my only fix was to cob them up in OrcaSlicer with added in parts that prevent this again. Someone knowing CAD could do something much nicer.
BFI-VT_Housing_Symmetrical_x2.stl has an M5 and an M3 hole on each side like the V2.4 housing, but the VT housing should have four M5 holes.
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