Hydra AMS has been updated to version 1.09. The roller slot placements have been optimized as there were some cases with 1.08 where smaller than normal 1 Kg spools (say 190 mm diameter) would hit the floor of the Hydra AMS with the roller in the rearmost position, causing the spool rotation to be restricted. If you've not experienced this yourself there is no need to upgrade to 1.09.

If you want to use larger diameter spools with the lid closed I recommend the optional Hydra AMS - Improved Rear Rollers.

Update July 17, 2023

Hydra AMS has been updated to version 1.08. It increases the max allowed diameter of the spools without having to use a lid spacer by moving the rearmost roller back and down as much as possible. Spools up to a little above 203 mm are compatible (I've tested 203.4 mm myself which works) with the lid closed. The max spool width is unchanged at 75.0 mm.

Also, the assembled Hydra footprint / width has been reduced slightly, making it easier to fit inside the AMS box without having to shoehorn it.

I still recommend using the Hydra AMS - Silica Dry Boxes / Serial Number Tags to ensure it's fully pressed to the bottom at the front.

Update June 23, 2023

Hydra AMS - Universal Spool Adapter is now available as well, download it here!

Support

All my designs and mods on Printables are free to use and remix. They have a non-commercial license. If you enjoy this or any of my other designs you can send me a small donation using the link below. Thanks :)

https://www.paypal.me/humebeamengineering

About

This is a remix of the current Hydra AMS but without the spool guides. The spool guides are useful to keep the spools mostly centered.