Balsa Wood Spacers and Headless Pins (Step 9)

9. Attach balsa wood spacers with headless pins.

We used a variety of dimensions, and aimed to have the spacer flush or slightly narrower than the frame 'lip'. The balsa spacers were stained to match the tone and darkness value of the frames. We attached a thin strip of double‑sided tape (3M 415 tape) to the balsa wood spacer and placed headless pins approximately 5 inches apart. We then positioned the spacer and attached it to the sidewall with the 415 tape. We inserted the headless pins by pressing with a small rectangle of metal and the Fletcher brand "Frame Mate" tool. We did not countersink the pins. The balsa wood spacers should hold the glass firmly but not pinch or press if the glass is warped. Note that the glass is positioned with rag board strips to keep from shifting. See Step 7. 'Attach Volara...'