Yet Another AMS Side Mounted Spool Holder

Well, this is Yet Another AMS Side Mounted Spool Holder.

It is mainly inspired by “LPSH - Low Profile Spoolholder (sidemounted for AMS)” and “Easy AMS side mount spool holder”.

I was not sure if the new cardboard spools from eSun would work with the mentioned spool holders, so I made my own.
I know there are two modifications of the AMS in the wild, I have one with narrow side slots so the holder clamps made to fit that AMS version.
I think not all 4 clamps are necessary, but you will need at least 3 of them to get a secure mount.

The holder accepts standard spools no wider than 80mm with a minimum center hole of 49mm and a diameter of 22cm or less.

BOM for the full version with 4 clamps:

M3x16 screw - 2 pcs
M3x20 screw - 10 pcs
M3 heat-set threaded insert (4-5mm long, 4.2mm dia)  - 2 pcs
M3 hexagonal nut - 10 pcs
608 bearing - 2 pcs
PC4-M10 push-fit - 1 pc
PTFE tube - 1 pc
M3 washers (optional) - 12 pcs

Print instructions:

All parts print without supports
I think it's best to print the holder in PLA (PLA+, PLA Tough, PLA-CF, whatever) because of the rigidity of PLA, but probably it can be printed in any polymer type except TPU :)

All sockets for hex nuts are designed with a sacrificial layer that should be punched through before the nuts are placed. This can be done with a screw itself or with any suitable high-tech tool like a nail or a screwdriver. :)

The filament guide is equipped with a print-in-place ball joint. It is designed with a 0.2mm tolerance between moving parts. I suggest to print it with 0.12-0.08mm layer height to get the adequate thread quality. The guide has a hole in it for a piece of filament or something suitable to hold the inner part in place while the push-fit is screwed in.

I printed all parts of the holder except the filament guide with the following settings:

Layer height - 0.2mm
Order of walls - "outer/inner"
Wall loops - 5
Detect thin walls - yes
Top and Bottom shell layers - 5
Sparse infill density - 25%
Infill pattern - Adaptive Cubic
Seam position - varies for different parts and is a matter of personal taste

For the filament guide all settings are the same except:
Layer height - 0.12mm
Top and Bottom shell layers - 8
Seam position - Random - this is better for the thread and ball joint.

You can find two Bambu Studio projects with all my settings in the “Files” section.

Assembly

I think everything is pretty obvious and clear from the photos. 

• Punch holes through all sacrificial layers 
• Install heat-set inserts with a soldering iron
• Insert a piece of filament into the hole in the filament guide and screw in the PC4-M10. The orientation of the PC4-M10 is up to you, maybe it is better to install it facing the printer (i.e. opposite to the way shown on the photos), I have not decided yet.
• Press the 608 ball bearings into the roller
• Screw the roller and the support to the main body with two M3x16 screws.
• Insert hex nuts
• Screw on the filament guide
• Screw on the clamps loosely
• Mount the holder on the AMS, tighten all clamp screws (not too much), insert the PTFE tube and you are ready to go