Sunlu S4 easy AMS Lite

This is a compact AMS Lite adapter for your Sunlu S4.

I didn't like how it's so big and bulky and I couldn't dry my filament while printing. The existing solutions didn't satisfy me, because I didn't want to break something. I know I will not forever stay on this printer and dryer combo and so they were not for me.

All you need to do is print the 8 single files or one of the combined files (Sunlu_S4_easy_AMS_Lite.*).

The mount is designed to sit on top of the dryer. I just glued it with hotglue because I didn't want to destroy something. The PCB holder is glued underneath the feeders on the back of the dryer.

Edit: I had to reglue one feeder after a month because I didn't use enough. Watch out to not glue the lid shut. I opened it just before it fully hardened to prevent that. Try opening both sides with the planned spacing to check if the feeders collide. My pictures should give a rough estimation where they should be placed.

Edit 2: 3M VHB Tape should work without any problems

Assembly

• I did use the 3 original Motherboard screws [https://wiki.bambulab.com/en/ams/maintenance/ams-lite-body#:~:text=Screw%20B,lite%20mainboard%EF%BC%9A3PCS] for securing the Motherboard again.
• For mounting the feeder motors you could try without the clamps and just put a drop of hotglue underneath. I used the clamps but I'm not 100% satisfied, even tho it holds up since 1 week of heavy use. I used 4 of the 8 original screws [https://wiki.bambulab.com/en/a1/manual/ams-lite-top-mount-tutorial#:~:text=use%20your%20own-,12%20*%20M3%2D10,-screws%20or%20purchase] from the top mount print.

Limitations

• I don't use NFC spools and didn't implement them. It's possible to adapt the parts.
• I guess the hotglue could melt when heating the chamber. I just use it to store my rolls with Mode 2, so no extensive heating.
• The Sunlu S4 has to stand sideways so the cable and tubes can reach. You could adapt these parts to be longer, but for me it fits.
• Opening the Sunlu S4 is much easier than with the alternative solutions, but depending on your bowden tubes it could be a little bit annoying. I used the tubes from the Sunlu S4 and cut them in half. You can mount it like me on the sides. Than you might have to pull a little to unroll some filament to make the loop bigger to fully open, but that's no problem. You could also mount them on top, but I don't like this one when closing the dryer. It always tangles the filament because too much is unrolled.