Wednesday, September 8, 2021

Repair - Kent KF-720 dreadnought acoustic guitar made in Korea 1970s Part 1

This job was a repair for someone who had tried to repair it themselves and had a lot of issues. So I was tasked to undo what had already been done and start over:

  • Tap truss rod back into proper position
  • Create custom string guide for zero fret
  • Removed bridge, cleaned off super glue, filed lower to improve action and screw holes filled with its own matching sawdust
  • Scraped and sanded bridge pad, filled and re-drilled 6 string holes for bridge
  • Re-glued bridge, correcting string spacing and alignment
  • Polished frets, rounded fretboard edges, cleaned & oiled rosewood
  • De-glossed back of neck with Scotch Brite pad
  • Minor cosmetic touch-ups with wood stain match pen
  • New Elixir strings 13 gauge with setup


Below are Before repair photos:

Cleaned residue off plastic tortoise shell pickguard






Removing nut and pushing truss rod back into neck



Removed bridge next to bridge pad

Scraping and sanding bridge pad


Filling dual bridge pin holes, 13 total, with chopsticks

Plugged 13 holes on sound board using chopsticks and wood glue

Aligning bridge for intonation and correcting scale length issues

Re-glued label that was lifting up

Re-drilling bridge pin holes



Plugging holes and filling with matching sawdust

Clamping bridge on


Cleaning and maintenance closed back tuners

New custom stained wood truss rod cover

See Part 2 for the finished pictures