***DISCLAIMER PLEASE READ***

SAFETY FIRST: This is a sliding drawer system and as with any drawers anchoring is STRONGLY recommended to prevent tipping accidents. Please consider your own safety first as well as the safety of your equipment. 

Use caution when changing spools. 

Please read entire description and ask questions before printing. 

There is a lot of time and filament involved in setting up a stack.

If you have questions please ask in the comments

***END DISCLAIMER***

Update 6/5: AMS V2 Pro support added. There is a new profile that will allow for mixing and matching of AMSv2/AMSv1 in the same stack. There is an updated connector and new rails for each AMS version. Currently I am only providing mods for the ExtraSupport series as this has become more or less the standard. I will be updating this new profile with updated fingerpulls for the AMS v2 when I can get around to it.

***All New prints should use this profile***

Update 12/13: (New profile for ExtraSupport. Please read ExtraSupport Section and leave any comments or concerns before printing.)

What ExtraSupport offers:

• Helps reduce sag when changing spools. 
• Lid will open further making spool changes easier.
• Allow multiple configurations depending on your space and preference
• Due to the additional travel lengths 1500mm 6pin AMS cables will be required from AMS to AMS
• Extended rails will require one additional bearing (6 per rail)
• Dowel holes added to Blanks/Rears

Standard Dimensions 

• Width = 410
• Depth = 350
• Travel Distance = 327

ExtraSupport Options compared to the standard option from least support to most support. 

• ExtraSupport Rears + ExtraSupport Rails = +32mm depth +32mm travel
• ExtraSupport Rears + Standard Rails = +32mm depth +32mm travel *when above AMS is pushed back completely
• ExtraSupport Blanks + ExtraSupport Rears + ExtraSupport Rails = +64mm depth +57mm travel
• ExtraSupport Blanks + ExtraSupport Rears + Standard Rails = +64 depth + 57mm travel *when above AMS is pushed back completely

*To help combat tipping, aside from wall anchoring. I am suggesting that the top AMS units utilize standard rails. This will let you push the AMS back 32mm and require less of the lower AMS to be pulled out for spool changes and spread the weight a little more evenly

**Mixing Extrasupport with Standard Support

• ExtraSupport Blanks will not stack with Standard Blanks.
• ExtraSupport Rears will not stack with Standard Rears.
• Standard Rails can be used with ExtraSupport Blanks/Rears

If you like symmetry and have the space I suggest a full ExtraSupport setup. This will keep your AMSs centered in the stack and provide a little more room behind the AMS for cable/ptfe management. This is the setup I am using and in my experience so far, it is rather stable even in its current state while I await delivery of a 3rd AMS from BF sale. I can open an AMS fully and still have some travel left. 

Update 12/7

Fix cosmetic issue with chamfer on side of 1 block brace

Add Slim Fingergrip 

UPDATE 11/28

NEW ADDITION: 

• AMS Handle/Finger grip
• requires
  • m2 heat insert x4
  • m2 6mm screw buttonhead
  • double side tape (I used this but found something more generic here)
    • adhere to underside of AMS to prevent cracking of stalks
    • use a small piece at the dogbone connection point to adhere to underside of AMS
    • more can be used but will make it more difficult to remove
    • Adds nice grabbing points with or without the handle
• Support Stalks
  • designed to be full height.
  • can be cut down to size easily in studio (40 mm suggested lowest overall height)
• Adds nice aesthetic look

UPDATE 11/26:

NEW ADDITIONS: Add some finishing touches to your stack

• Feet (TPU recommended)
• Heads/Toppers

First things first:

This is a heavily modified version of the fabulous AMS Stacking System by @ultrajaxel and want to say a big thanks for their work.

Please note that this is being published with permission from @ultrajxel and per their request I am only going to include the bits that were modified. Please refer to the original for all the extra bits, (dovetails, dowels, brace connectors, feet, etc.)
 

For anyone with multiple AMS units, the original is a great model though personally I was looking for something a bit more compact that still allowed spool changes. Based on some other images seen in the comments of the original model, the rolling model was born. This was a bit more challenging than I had imagined when I first started working on this. The difficulty lied within the length required to be able to pull an AMS out far enough to change spools. In order to achieve this goal I have:

• AMS connector (AKA Rail)
  • Lengthened
  • Added support for bearings (5x 608zz per rail)
  • Added stopper to rear of rail to prevent AMS from being pulled out completely
• Rear braces (now required)
  • Lengthened
  • Cutout for rail including stopping points
  • Added anchor points #8 and #10 panhead (these are NOT for wall mounting)
  • brace 2 block update (11/19)
    • Slight modification to the rear brace 2 block. I noticed the alignment of the anchoring holes on the crossbars was slightly off. 
    • This is cosmetic and only affects those who downloaded/printed prior to 11/19.
• Front blanks (now required)
  • Lengthened
  • Cutout for rail including stopping points
  • Dovetail slots rotated 180 to create an opposing force when an AMS is pulled out to prevent the blank from separating from the block
• Blocks
  • Front dovetail slots rotated 180 to create an opposing force when an AMS is pulled out to prevent the block from separating from the blanks
  • Cutout for rails
  • Upper dovetail slots removed
• Vertical Interlocks (NEW requirement) (2 AMS = 2 , 3 AMS = 4, 4 AMS = 6)  [added 11/20]
  • These slide onto the crossbars between an upper and lower rear brace of individual AMS stacks
  • These prevent the separation of stacks when an AMS is pulled out for spool changes
• Under AMS Braces (Strongly recommend) (2 per AMS)
  • These connect to the dovetail slots on the lower inside of the blocks and help prevent the stack from twisting. 
  • Install these flat side up/dovetail opening facing down. 

BITS not included but required

• Dovetails (AKA bowties)
  • plates 3,5 and 6 in original
  • provide secure connections
  • 2 block 8x per block
  • 1 block 4x per block
  • Under AMS brace (2x per brace)
• Dowels
  • plate 7 in original
  • DO NOT provide secure connections
  • Used to keep blocks connected to another vertical block
  • 2x per block connection
• Rear brace and Under AMS brace connector
  • plate 7 in original
  • provide secure connections between left and right braces
  • 1x per brace

OPTIONAL BITS

• Heads/Toppers
  • Purely cosmetic
  • 4x for entire stack
• Feet
  • TPU Recommended
  • 4x for entire stack

Things to be aware of before printing.

• Print settings are mostly the same as the original with the main exception being the infill
• A full AMS unit is HEAVY. 
  • Anchoring to a wall is STRONGLY recommended. 
  • When an AMS pulled out for spool changes, the whole stack can become front heavy. Which could lead to tipping over causing damage to your AMS units.
  • Rails do support the weight of a full AMS when pulled out though there is noticeable sag. Do not lean on AMS when changing spools to prevent damage.
• Changing Spools
  • Spools can be changed without having to pull out AMS to the extents, though lid does not stay open. (safer)
  • Lid will stay open when pulled out to the full extent. (use extra caution)
• Stacks up to 4 units should work though I am unable to test this. 
• When fully assembled the rails will be encased in the stack and cannot be removed without disassembling the stack.
  • insert rails into front blank and pull through to stopping point prior to connecting to the blocks.
• Motion of rails is not a smooth as one might like, though it does function. I believe this is partly due to 
  • tolerances
  • weight of AMS putting a slight inward force
  • difficulty pulling out AMS evenly left to right
  • twisting and flexing of stack
• AMS cables 
  • I found that the factory AMS to AMS/Buffer/Hub (510mm) cables were sufficient for my 2 stack setup, However both, the connection to the printer and the second AMS were cutting it close. You may want to pick up the longer (1500mm) ones here