D12 Dodecahedron MOLD for Stained Glass Making - Stained Glass Jig - Twelve Sided Shape Mold

Our jig makes soldering dodecahedrons much easier by creating perfect angles. I’ve also shown how you can make a dodecahedron base and add polygons to make a terrarium.

Accommodates multiple sizes of pentagons to create different sized D12s(dodecahedron). My photos show a 2” side pentagon(total width is 3”). Pattern included to make multiple size D12s and terrariums (Link to download will be in the box).

Youtube tutorial here

Mold, pattern and YouTube tutorial ONLY-does NOT include completed projects. Photos shown only to illustrate something you could create with the mold.

Made with PLA filament. **PLEASE NOTE** This mold is made with plastic which WILL MELT with direct contact from your soldering iron. Only use to tack this pieces together, don’t solder seams on the mold.(You’ll get better lines soldering off the jig anyway where you can hold the seam level.) I have made DOZENS of these with my mold with MINIMAL burns, none of which effect the usage. Used properly this jig will last for years. Can be slightly sanded if you do make it uneven(have never had to do this personally). Please be aware of this before purchase. I will not accept refunds or exchanges on this item. 

Tiktok video about this available here: https://vm.tiktok.com/ZTds6aR3X/?k=1

If you decide to post your creation on social media we'd love a tag to share with other glass artists, not a requirement but super thankful if you do (@bluehillglassstudio).

For best results: Cut and grind pentagons as perfectly as possible, make sure you solder on a lower temp, use flux sparingly and take patience to prevent burning your mold. Edges should touch, not overlap. You can add an additional layer of foil on the outside once its tacked together for large seams. Build your outer seams slowly by putting a base layer down, allow to cool, then create your top layer. If you use 50/50 solder on the inner seams, and 60/40 on the outer seams, you will have less dripping.