Bad Halves of Knobs

Bad Knob Halves

These knobs failed in the glue joint either on cutting or upon tightening the set screw.  In this case J-B Weld PlasticWeld was used and fail twice on one knob, after it was re-glued.  For this reason, no more of these knobs will be made.  The failure rate approaches 50%.  Instead, knobs with a wood used for the pointer will be made of a ¼ inch pointer layer glued to a 3/4 inch body of contrasting color, probably using a water-based exterior-rated wood glue and strong clamps.  One might suspect that these could be salvaged by sanding off the epoxy layers and using aliphatic wood glue, but the epoxy might have entered far enough into the grain to interfere with wood glue.  C’est la vie.

© 2017 Don Baker dba android originals LC

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