Hey Guys...I tried doing the first coat of the burst last night, and I have a few "spots" where the finish didn't take...like at all. They are white blips, and I'm not sure how to fix that? the whole thing was sanded down starting with 220 and ending with 400. Any thoughts on how to fix it?
Thanks
Hi bud, sometimes just skin oils from handling can cause problems with a finish. I like to give the wood a light rub down with Shellite, just to remove any finger marks.
Were any of these spots where any glue might have been? Is it on the end grain?
Sometimes end grain can be stubborn and won't accept the finish without through sanding.
If it's not taking to to wood at all like you say, you will probably have to sand it back.
Some pics would be helpful so we could see the affected areas.
Ok, two things spring to mind.
1. Glue spots
2. Over sanding.. I only sand to 240 grit max... You need to leave some tooth for the wudtone to grab onto and also sanding to 400 can polish the wood so it wont accept the finish.
There is always a workaround for glitches, mistakes and other Guitar building gremlins.....
Here are some shots so you can see what I'm talking about. I've got some blending and fixing to do from an overall standpoint, but need to fix these spots first. Dingobass...is this a sand down and restart kind of thing??
Thanks!
Have some blending and fading to do, but this at least gives the bigger picture.
Unfortunately, that does look like glue! If you have not already done so, can I suggest you have a thorough read of this thread. It will help you with a number of issues you are likely to encounter.
http://www.pitbullguitars.com/?page_...iewtopic&t=302
Gavmeister
Also seems to be a faint lighter patch running ~1cm around the edge on the bottom horn - may be glue as well...
Current builds:
GPB-4B: https://www.buildyourownguitar.com.a...548#post184548
BTW the burst looks fantastic.
Don't be downhearted if you decide to sand it back. We've all been there before. It's part of the learning experience.
You could try just rubbing back the effected areas, though it's usually worth sanding the entire effected face.
I'm not saying its a deffinate re-sand, that's a decision that you have to make, but if it's noticeable now it's not going to blend in with more coats.
Ok...so I got the wire brush, took care of the glue spots, now I have a new problem. (don't I always?)
So, I'm pretty happy with the fade in the burst, but now, around the edge I see a MUCH lighter line. I didn't sand that back, so I'm not sure what happened there. Is it possible to take more deep base color and go over top in the light areas with a few coats to get it to darken up?
Help! (again!)
Hmmmm......
This is the problem! The base coats are effectively a sealer. So when you apply the first coat it is generally very important to get as even a finish as you can. We often suggest you keep going with the first coat until the woods thirst for paint is quenched! By sanding back only the effected areas when you apply the fresh coat it is always going to expose the different layer. You have two options, either soldier on in the hope that as you layer addition coats that the difference will become less noticeable, or you can sand back and start again making sure you apply and even coat accross the whole of the guitar top. The complicating factor is that your guitar top is a cap and these caps are notoriously thin. I'd be looking at the first and easier option and work on getting those colours to blend.
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