BT Snappy : a few QOL improvements

[glacial oxide]

These mods are QOL improvements, they do not affect any functionality in any way.

The original BT Snappy : https://github.com/MakerMylo/BT_Snappy

• Use untouched knifes !
• Found the ECAS a bit loose in the EREC Blade Holder. Remixed using the standard Turtle dimentions for ECAS
• Pin mod for the EREC Blade Holder (I don't like screws as pivots...) : we have plenty of leftover 3x20mm pins after building the extruders... Why not use one ?
• A spacer for the servo mount, rather than various EREC Servo Gears : the model is 1mm thick, to be adjusted in the slicer (Z scaling feature)
• The EREC Servo Gear is secured with a M3x18 screw. This length is unusual, tagged as "not recommanded" in my books, as well as 14mm. The gear was remixed for a 16mm screw.

Contents of the archive :

• Cutter Arm ECAS Full Blade MOD ; do not snap the knife tip ! The STEP is a bit messy : the original STEP is unpublished, had to edit the STL...
• Main Body MOD : fits the remixed Servo Gear, also required for the pin mod
• Pin Retainer MOD : this piece secures the pin on the Min Body
• Servo Gear M3x16 MOD : remixed for a 16mm screw

STLs are properly oriented, do not reorient in the slicer. Mouse ears may help for the Main Body...

/!\ Servo Gear : 5 top/bottom layers, 5 walls, 0.16mm layers, 55% cubic infill (see instrutions on the EREC Git)

[rose idol]

Any attribution 👀 or better still fork it and put in a PR

[glacial oxide]

Will try... Don't know how to do that !
But how and where ? Isn't BT Snappy part of the BoxTurtle project ?

[rose idol]

No its a usermod, there will be a better way of managing them in the future but for now, it's not.

[glacial oxide]

OK. It's weird : a MMU without official filament cutter !
If you find something interesting in this mod, just make it your own. Not fluent with WinGit, and out of time.

[rose idol]

If you could just edit your post and put attribution to the original GIT so people know what it is a derivative of that would be great.

[glacial oxide]

Ah, Ok ! Thought everybody here will know what BT Snappy is !

[hushed schooner]

@rose idol A quick question, I am thinking to add BT_Snappy to my BT, can I hook the servo up to RGB3 on the AFC-Lite (v1.0) board - PIN:PB10?

[rose idol]

For signal yes, for power no.

[hushed schooner]

thank you 🙂 any suggestion for how to power the servo?

[mighty quarry]

Any buck converter will do it, iirc the servo mylo recommends stalls at 5 or 7 amps peak

[hushed schooner]

Thank you, I just read the same thing in the EREC documentation from KevinAKASam's cutter

[mighty quarry]

Great 👍

[rose idol]

Also, this isnt the thread for snappy, This is: https://discord.com/channels/1229586267671629945/1292367374745600030

[hushed schooner]

thank you, I didn't have this on my channel list

[flat grotto]

Looking at EREC repo, it mentions that the cutter arm is 0.16, not the servo gear, might want to fix that in your description to avoid confusion…

[glacial oxide]

Thanks !
You are right. I wrote servo gear instead of cutter arm.
Fixed.
The blade cannot be properly seated if the arm is printed with 0.20 layers. Ask me how I know !