Paint bottle holders. Designed to hold bottles of paint in a stackable configuration. Holds several bottles of paint. Additional holders can be stacked on top and won't slide off because there are holes in the bottom of the tray that the lids of the lower tray bottles fit into.
There are several variants:
"27mm Round" for 1/2 oz model paints like Vallejo & Reaper
"29mm Round" for 1oz applicator bottles (see below)
"35mm Round" for 2oz craft acrylics
"Testors" for ... well... Testors model paints
These were all modeled using On Shape and are available for you to copy and change to fit your needs:
https://cad.onshape.com/documents/31e3cba9b78901245cd749a5/w/d641f8354c35a6f8dd01a5ed/e/2270614df0cf90d9f50bfebd
Applicator Bottles
These are great for mixing and thinning paints for airbrushing
Also they are resistant to Acetone so they work well with ABS slurry
https://www.amazon.com/gp/product/B00G5FN6IC/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
