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Finally revisiting a fretless project

First coat of osmo applied …

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Interested that you used Polyx. I have a little left from doing the floors and doors in our house and I'm thinking of sanding down an old Yamaha BBN4III I got off Ebay last year. I was going to use Polyx but have only just seen this.
What grade did you sand down to? I was going to take it only to 120 grit as Osmo say any finer sanding clogs the grain even after wiping with white spirit and first coat won't penetrate and possible leave 'pooling'. I was also going to apply with a microfibre.
 
Interested that you used Polyx. I have a little left from doing the floors and doors in our house and I'm thinking of sanding down an old Yamaha BBN4III I got off Ebay last year. I was going to use Polyx but have only just seen this.
What grade did you sand down to? I was going to take it only to 120 grit as Osmo say any finer sanding clogs the grain even after wiping with white spirit and first coat won't penetrate and possible leave 'pooling'. I was also going to apply with a microfibre.
I've used Osmo a few times now, and I have a few thoughts.

Their suggested 120 grit may work for a floor, but IMHO it's nowhere near smooth enough for what we expect to feel on a guitar. I did testers with 220 and they were also not smooth enough. I've ended up taking it to 320 grit with lots of grain raising in between (steam and damp cloths) to make sure it's smooth. I really, really like the feel when it's been grain filled with epoxy and then had Osmo applied, but that's not for everyone.

I made a couple of charcuterie boards out of walnut for holiday gifts and even though I sanded them to 320 before doing two coats of Osmo, there's enough grain feel for me to be irritated by it. :D
 
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Interested that you used Polyx. I have a little left from doing the floors and doors in our house and I'm thinking of sanding down an old Yamaha BBN4III I got off Ebay last year. I was going to use Polyx but have only just seen this.
What grade did you sand down to? I was going to take it only to 120 grit as Osmo say any finer sanding clogs the grain even after wiping with white spirit and first coat won't penetrate and possible leave 'pooling'. I was also going to apply with a microfibre.


I went to 320 and then some 0000 steel wool. I wasn’t looking for gloss, or id go higher and polish
 
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I've used Osmo a few times now, and I have a few thoughts.

Their suggested 120 grit may work for a floor, but IMHO it's nowhere near smooth enough for what we expect to feel on a guitar. I did testers with 220 and they were also not smooth enough. I've ended up taking it to 320 grit with lots of grain raising in between (steam and damp cloths) to make sure it's smooth. I really, really like the feel when it's been grain filled with epoxy and then had Osmo applied, but that's not for everyone.

I made a couple of charcuterie boards out of walnut for holiday gifts and even though I sanded them to 320 before doing two coats of Osmo, there's enough grain feel for me to be irritated by it. :D
Steaming, hmmm. How exactly would you go about that? I've tried searching but all I'm seeing is resetting a neck using steam. I've got a very good pressure steam cleaner for using in the house, would that work?
Would you take it all the way down to 320, then steam, sand and repeat multiple times? How long do you leave the steamed wood befor embarking on the next rubbing down?
Sorry for bombarding you with loads of questions but this method sounds really interesting.
Happy to hear you can also go finer with the Osmo. :thumbsup:
 
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Steaming, hmmm. How exactly would you go about that? I've tried searching but all I'm seeing is resetting a neck using steam. I've got a very good pressure steam cleaner for using in the house, would that work?
Would you take it all the way down to 320, then steam, sand and repeat multiple times? How long do you leave the steamed wood befor embarking on the next rubbing down?
Sorry for bombarding you with loads of questions but this method sounds really interesting.
Happy to hear you can also go finer with the Osmo. :thumbsup:
I sand up to 220, then raise the grain over the piece with a damp (almost dry) cloth. From there, I sand and grain raise again or twice more depending on how much grain raises up. I then go over the entire thing with a small swatch of terrycloth (towel) a small bowl of water and a soldering iron. I get it damp, apply it to any bumps or dings and then apply the soldering iron to the towel and it blasts the fibers with steam causing them to expand. I do this over the entire instrument to ensure everything gets very smooth. I'm a bit obsessive though. :D
 
I sand up to 220, then raise the grain over the piece with a damp (almost dry) cloth. From there, I sand and grain raise again or twice more depending on how much grain raises up. I then go over the entire thing with a small swatch of terrycloth (towel) a small bowl of water and a soldering iron. I get it damp, apply it to any bumps or dings and then apply the soldering iron to the towel and it blasts the fibers with steam causing them to expand. I do this over the entire instrument to ensure everything gets very smooth. I'm a bit obsessive though. :D
Thanks Beej really appreciate it, great advice from another master like DH. :thumbsup:
 
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