9 Published September 8, 2015 at 900 × 600 in 1934 Gibson L-50 – repair & refret. ← Previous Next → Heating the frets for removal confirmed our thoughts, the vapour was that of CA glue – which didn’t exist when this guitar was made! Luckily the original re-fret job was clean, and the frets came out very nicely with no tear out of the rosewood.