A Lid Hold Open Stay For The Bambu AMS PRO 2.

This is a “Stay” for the Bambu AMS PRO 2.

Youtube Video here:

https://youtube.com/shorts/hZqCfHmgdxg?feature=share

It allows you to open the AMS and have it stay open whilst you are changing spools (etc.). It relies on you have a shelf or flat surface of some sort above the AMS to attach the “grab” to AND as you will see in the photos it is (in this use case) reliant on the excellent angled stands by Merlin2k available here:

https://makerworld.com/en/models/1327540-ams-2-pro-angled-shelf-mount-with-screws#profileId-1365181

I made these awhile back after struggling to rearrange spools in the AMS on a shelf! I originally tried to design some kind of prop but my partner walked in and said… “what about a magnet stuck to the shelf above?” I always knew she would come in handy one day!

Unfortunately with this you will either need to find this first and then install your shelves and AMS units to meet with this design or be very lucky with the distance between the existing shelves you have OR you will need to alter the design… this is why I’ve included the Fusion 3D file. However, please note that it is a bit of a mess of failed designs. Hopefully you will be able to modify the grabber though 😊

What you need:

1x Magnet 20 mm diameter, 5 mm thick N42

1x Washer 19.9 mm outer diameter, 10.6 mm inner diameter, 2.0mm thick

A small amount of 3M 9088 double sided adhesive tape or just some thin decent quality double sided carpet tape.

With the ready for print files you need a 420mm/16.5” inch gap between the top of one shelf and the bottom of the other. There is some tolerance but not much.

The Instructions

The handle:

Ideally use the 3mf file which already has the negative void for the washer, has the support setup etc.

Note that the object has parts for changing the colour of the logo on the top.

If using the STL file then split to parts. The first part needs to be changed to a NEGATIVE part to make the washer void.

The second part is the body of the handle

The remaining parts are the Bambu logo.

At layer 17, add a pause. When the print pauses, put the washer in and resume. Make certain there is enough clearance for the print head with eh washer you used! I allowed some tolerance so the washer I inserted is loose in the handle.

With the STL you will need to set support to manual, support paint the upper side of the slot. Check that the supports are correctly set in the slicer after slicing.

After printing you will need to remove the support. I tired this several times with different methods but the best one for me was to use small needle nose pliers, push them into the support material, squeeze and then pull back quickly. Usually this pulled our either the entire support platform cleanly.

The handle should just push fit tightly over the existing AMS PRO 2 handle.

The grabber:

You might want to alter the seam position for this if using the STL file.

This should print with no supports at all, once printed insert the magnet. It should fit quite tightly. Push the cap over it and (optionally) glue in place especially if the magnet and/or cap piece feels loose.

Cut the 3M tape loosely to suit and stick it to the top of the Grabber. Trim the access. Put the Grabber on the handle and centre it, lift the AMS lid up and check everything looks like it will seat correctly. Remove the protective covering on the tape, repeat and put the grabber in its final position once you are happy with it’s position.

As I write this my both my grabbers have stayed in place for weeks with no movement at all using the 3M tape.