Designed and printed these 29-38mm motor adapters in PETG recently. Meant to be similar and as easy as the smaller Estes adapters. Not perfect, I'll make some adjustments. But, they should work fine. There are two files. One for 29mm Aerotech DMS/Single-Use/HobbyLine and the other for 29mm Aerotech High-Power style cases. Both have outer dimensions matching the 38mm HP cases.
