I have a cigar box, and the lid looks like it's made of masonite rather than wood. The rest of the box is made out of standard cigar box wood. Will this be any good for a guitar? Would turning it upside down make a difference (the top and bottom halves are the same size)?

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  • As William said, Fostner bits don't like the fiberboard. The seem to generate large quantities of fuzz balls. I got good results from a sharp new hole saw using light pressure and slow speed in the drill press.

  • The first CBG I ever made was Masonite-I took to heart the advice on this forum to 'use the good stuff last so you'll know what you're doing by then', and glued two small Romeo and Juliet boxes into one body, cut off both lids and traced a1/8" Birch ply soundbord for it. Once I had resealed the Masonite inside and out with lacquer, it sounded great, once I found someone competant to actually PLAY it...

    I'm beginning to be less surprised that some manufacturers are making entry-level Ukuleles from plastic and still getting a decent sound out of them.
  • I have found that Forstner bits do not like to cut fiber board. I use a hole saw in my drill press. 

  • Masonite box + mag pickup = ace electric cbg!
    • Do you have a clip where i can hear this? I just came across some nice boxes with a masonite top and back.

  • I can see a faint darkening around the holes where I applied the CA.  Looks to have penetrated into the fiberboard a *good* 3/4"!  The whole lid could be hardened by drilling a 1" grid of 1/8" holes into the underside and shooting in a couple of tubes of cheap glue.

    E D said:
    A couple good tips I hadn't considered.  Thanks for sharing.

    Chuck Dubman said:
    Unpleasant material to drill or saw, although a *sharp* chisel or knife cuts through clean, like butter.  Thin viscosity superglue (dollar store glue is fine) is a *big* help here.  Soaks into the spaces between fibers and hardens like concrete.  Use it to coat edges of soundholes to keep them from delaminating -- rough cut them undersized, coat with CA, then carve, file, sand, etc. to finished size.  If you're countersinking into fiberboard, say, for fastening down a box lid with flathead screws, run a drop or two down the pilot hole before countersinking to bind the fibers together for a clean, fuzz-free cut, then hit again to seal.  You'll be able to tighten the screws down snugly without them pulling through.
  • A couple good tips I hadn't considered.  Thanks for sharing.

    Chuck Dubman said:
    Unpleasant material to drill or saw, although a *sharp* chisel or knife cuts through clean, like butter.  Thin viscosity superglue (dollar store glue is fine) is a *big* help here.  Soaks into the spaces between fibers and hardens like concrete.  Use it to coat edges of soundholes to keep them from delaminating -- rough cut them undersized, coat with CA, then carve, file, sand, etc. to finished size.  If you're countersinking into fiberboard, say, for fastening down a box lid with flathead screws, run a drop or two down the pilot hole before countersinking to bind the fibers together for a clean, fuzz-free cut, then hit again to seal.  You'll be able to tighten the screws down snugly without them pulling through.
  • Unpleasant material to drill or saw, although a *sharp* chisel or knife cuts through clean, like butter.  Thin viscosity superglue (dollar store glue is fine) is a *big* help here.  Soaks into the spaces between fibers and hardens like concrete.  Use it to coat edges of soundholes to keep them from delaminating -- rough cut them undersized, coat with CA, then carve, file, sand, etc. to finished size.  If you're countersinking into fiberboard, say, for fastening down a box lid with flathead screws, run a drop or two down the pilot hole before countersinking to bind the fibers together for a clean, fuzz-free cut, then hit again to seal.  You'll be able to tighten the screws down snugly without them pulling through.
  • It really depends on the box. Some with the fiberboard lids sound great, others sound so-so. I've found that most of the larger, deeper Romeo Y Julieta boxes have fiber tops and are killer!

     

    The truth is, you really never know until you build it.

     

     

    AFKAM

  • I have made a few with the masonite type tops and they work fine, You can turn it over if you like, the plywood bottom will have a different tone to it. I have found that the masonite tops do better with heavier strings. If its not loud enough when you are done try different strings.
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