[Buddahaid]

Started making the pop-up mechanisms today. The plan is to use two smaller brass telescoping tubes instead of the larger one integrated with the syringe. Doing it this way will hopefully have all the benefits of the easy slide, but attach the pop-up to the front instead of the back housing leaving the vacuform housing space empty. The challenge in doing it this way is the two sets of tubes need to be nicely parallel in two planes or it will bind.

With that in mind I made an alignment jig by carefully silver soldering two tubes together with heavy brass cross pieces. This allows me to JB Weld the two smaller tubes into the pop-up nicely aligned.