Hi All!
I made a number of rings as gifts over the holidays and have had two fail. I'm trying to figure out what happened, and if I might see more failures.
The cores were titanium (simple ring, not the two-part with a groove to hold the wood) with the titanium sanded to 180 grit on the glue side and cleaned with alcohol. The two that failed were both made with Padauk wood, which was glued immediately after having its recess made with a negative rake HSS scraper (sharpened with 180 grit wheel). The metal ring fit in the recess snugly but did not need force to slide in.
The glue used was Stick Fast CA Flexible (sold by Rockler), with enough used that there was a rim of squeeze out all the way around. The glue was purchased just a month before. Accelerator was sprayed on very lightly after the metal ring was fully in place.
It appears that the glue itself failed, since the metal separated from the wood, leaving bits of glue on both the titanium and the Padauk.
I'm guessing this was because the Stick Fast CA Flexible isn't actually very flexible? Or might I be running into problems from titanium or Padauk?
Hoping others with more experience have thoughts on what might have happened, how I can avoid this in the future, and what glues might be better for this case.
I recently made a couple similar rings with Padauk, using Mercury Adhesives Medium Flex CA glue to attach the titanium core to the Padauk. Haven't mailed them off yet because I'm afraid they might fail.
I made a number of rings as gifts over the holidays and have had two fail. I'm trying to figure out what happened, and if I might see more failures.
The cores were titanium (simple ring, not the two-part with a groove to hold the wood) with the titanium sanded to 180 grit on the glue side and cleaned with alcohol. The two that failed were both made with Padauk wood, which was glued immediately after having its recess made with a negative rake HSS scraper (sharpened with 180 grit wheel). The metal ring fit in the recess snugly but did not need force to slide in.
The glue used was Stick Fast CA Flexible (sold by Rockler), with enough used that there was a rim of squeeze out all the way around. The glue was purchased just a month before. Accelerator was sprayed on very lightly after the metal ring was fully in place.
It appears that the glue itself failed, since the metal separated from the wood, leaving bits of glue on both the titanium and the Padauk.
I'm guessing this was because the Stick Fast CA Flexible isn't actually very flexible? Or might I be running into problems from titanium or Padauk?
Hoping others with more experience have thoughts on what might have happened, how I can avoid this in the future, and what glues might be better for this case.
I recently made a couple similar rings with Padauk, using Mercury Adhesives Medium Flex CA glue to attach the titanium core to the Padauk. Haven't mailed them off yet because I'm afraid they might fail.