Search found 9 matches

by JeffHGW
Sun Jan 26, 2025 7:55 am
Forum: Instrument Builders Forum
Topic: Shellac finish question
Replies: 16
Views: 28271

Re: Shellac finish question

You make a good point Jim, I'll try that first. There was a bit of sanding in between coats which made things thinner.
by JeffHGW
Sun Jan 26, 2025 3:56 am
Forum: Instrument Builders Forum
Topic: Shellac finish question
Replies: 16
Views: 28271

Re: Shellac finish question

Here is the crazing on my guitar. It's really only noticeable in certain lights and was hard to capture in a photo. My plan is to sand it down until it looks like the cracks are gone, then re build up the finish more slowly following Alan's method. I wonder though if there's a risk that the lower le...
by JeffHGW
Sat Jan 25, 2025 12:26 pm
Forum: Instrument Builders Forum
Topic: Shellac finish question
Replies: 16
Views: 28271

Re: Shellac finish question

Alan, so when you mix 2lb cut and ethanol on the rubber, they combine and have a similar effect to using 1 lb cut? Is there an advantage to applying each to the rubber separately? Do you vary the ratio in certain situations? Thanks.
by JeffHGW
Sat Jan 25, 2025 4:26 am
Forum: Instrument Builders Forum
Topic: Shellac finish question
Replies: 16
Views: 28271

Re: Shellac finish question

Ok, thanks for the advice! I'll be sure to apply more slowly the next time. Do you guys think it would be possible to re amalgamate the cracks on the existing finish?
by JeffHGW
Fri Jan 24, 2025 7:46 am
Forum: Instrument Builders Forum
Topic: Shellac finish question
Replies: 16
Views: 28271

Re: Shellac finish question

It's a 2 lb cut, conventional dewaxed platina shellac flakes from shellac shack. No other additives. I didn't use any oil. I wasn't doing a traditional French polish of smoothing the finish using the pad, I was just wiping on successive coats to get a build up then sanding/buffing. I started out doi...
by JeffHGW
Fri Jan 24, 2025 7:15 am
Forum: Instrument Builders Forum
Topic: Shellac finish question
Replies: 16
Views: 28271

Shellac finish question

Hi everyone I'm doing a shellac finish for the first time and having an issue with what appears to be crazing. My application was I wiped on a bunch of thin coats of shellac over time until there was enough buildup to level sand and buff. It looked good for about a week, and then I noticed some micr...
by JeffHGW
Thu Feb 17, 2022 5:07 am
Forum: Instrument Builders Forum
Topic: Polyurethane finish questions
Replies: 5
Views: 5913

Re: Polyurethane finish questions

Excellent, thank you once again!
by JeffHGW
Wed Feb 16, 2022 5:15 am
Forum: Instrument Builders Forum
Topic: Polyurethane finish questions
Replies: 5
Views: 5913

Re: Polyurethane finish questions

Thank you Allen, that clears things up for me.
by JeffHGW
Tue Feb 15, 2022 5:52 am
Forum: Instrument Builders Forum
Topic: Polyurethane finish questions
Replies: 5
Views: 5913

Polyurethane finish questions

Hey, First post here so might as well introduce myself. I’m Jeff, been building guitars in Rotorua NZ for the last few years and lurking on this forum from time to time. I’ve been spraying mirocat 3220 on all my guitars, there’s some things I don’t like about it so I’m thinking of switching to mirot...