The Opposing_Arch_Base come in three sizes. Small (Blue), Medium (Green), Large (Orange). It can be used as an Upper or Lower.
The Opposing_Quadrant_Base comes in the same three sizes. It can be used as an Upper or Lower and Left or Right. To change from Left to a Right, just turn it over (both sides are the same).
The Arch Opposing Base can be used as an Upper or Lower.
The top and bottom of the Quadrant Opposing Bases are mirror images of each other, so they can be used as Left or Right and Upper or Lower when pouring Triple Tray Impressions.
The Opposing Index Plate is used to hold the Opposing Base in place when pouring arch and quadrant Triple Tray Impressions.
This shows a finished Triple Tray Arch case and how it was fabricated on the Pouring Jig.
This shows a finished Triple Tray Quadrant case and how it was fabricated on the Pouring Jig.