A 2nd packpack prototype, this time out of Tyvek. The final version will be made out of Ultra 200X which has no stretch and rather stiff. This prototype out of Tyvek shows how the final pack will "feel".

This version is deeper, taller and wider than the 1st version. I refined the bottom shape, which was relatively easy to do thanks to the parametric design in Seamly2D (https://seamly.io).

#MYOG #ultralight #ultralightbackpacking #MountainGoatMade #sewing #patterndesign #patternmaking

First prototype in fabric after drafting a pattern in Seamly2D (https://seamly.io/) based on the initial paper prototype. Made from recycled cotton. This prototype validated the pattern while also identifying several areas of improvement.

#MYOG #ultralight #ultralightbackpacking #MountainGoatMade #sewing #patterndesign #patternmaking

The first pattern was created in a vector graphics program (Affinity Designer). Adjusting margins, offsets turned out to be a pain in the neck.

Then I found out that FreeCAD, a parametric 3D modeling application, can export 2D views. I redid the same wallet design with all critical dimensions parameterized.

Producing wallets catering to different bill sizes is now as simple as adjusting one or two parameters.

#MYOG #ultralight #sewing #diy #MountainGoatMade #3dmodelling #cad