Showing posts with label sandpaper. Show all posts
Showing posts with label sandpaper. Show all posts

Tuesday, June 12, 2007

Stained, Not Cleared.

I have finally reached the combination of sick and tired of applying more coats of stain and pleased enough w/ how it looks finally that I'm going to start clear coating this sorry son of a bitch. As it is now, it needs a little work w/ some fine steel wool and maybe some sandpaper but it's good enough for me. The pictures look a little more purple here than in real life but I think this gives you a pretty good feel for the final color.

The front:

The back:


And that's all there is too it. I'm gonna put three or a half dozen coats of clear on it to get it nice and shiny, let it cure for a while and slap the thing together as soon as I can. The clear is mostly just to protect to wood but there's been enough scratches and other errors produced by my poor handling of the finishing process that it's really more to practice applying it than anything. It makes it look nice and shiny too, which makes my food taste better when I eat off of it.

Thursday, June 7, 2007

A Less Painful Stain

I cleaned up the streaky mess I made on my guitar a couple days ago using 100 grit sandpaper and then worked my way back up to sanding it w/ 400 grit. I wiped off the dust w/ mineral spirits and it's looking quite a lot better now:


The hanging thing obviously wasn't working for me so I'm just setting it down and doing one side at a time. Oddly enough, the back looks better this time around:


The front doesn't look half bad though:


My strategy at this point is to keep adding layers until most of my mistakes aren't too noticable. For now, in between layers, I am evening things out w/ 4oo grit sandpaper on a block but I'm going to switch to 0000 steel wool once I get things a little better. Once that's done w/, I'm gonna give it a couple or a half-dozen coats of the wipe on poly to get it nice and shiny and then I'm thinking I might go w/ a wax coat on top of it.

Next time, I am going to use a regular stain and then just finish it w/ the wipe on poly if I don't spray it. The combination stain/finish has really proven to be a pain. Regular stain and the wipe on finish are both easy to get on in thin and even coats but the combination seems to like to glop up a little. If I were finishing a railing, I wouldn't worry about it but hopefully, this will be a bit more musical in the end. Oh well--I suppose that's how you learn.

Tuesday, June 5, 2007

Stained and Confused

Finishing guitars is an artform in and of itself and a task to master on its own w/o having to worry about all the other aspects of guitar building. As w/ the rest of this project thus far, I'm pretty much jumping in head first and seeing what happens. In an uncharacteristic burst of forethought though, I did test several finishes out on scrap before hand to see what looked best:


The one I went w/ is in the very upper right. It is a MinwaxPolyshade finish coated w/ another couple of coats of a Minwax wipe-on gloss poly finish. The color is called Bombay mahogany and it really does look fantastic. It's not a perfectly smooth, mirror-like finish like you normally see on guitars because I did nothing to fill the grain but it has a beautiful hand-rubbed luster that gives it a real quality but still homemade kind of look.

The rig I'm using here (which is at the home of one of the most famous artists in Chicago) is just a bunch of coat hangers through the neck holes on a wooden bar I put across a couple odds and ends:


I had it hanging because every picture I've seen of people finishing guitars has it hanging. Unfortunately, the difference between when they did and what I'm trying to do is they're spraying and I'm brushing. Consequently, the body kind of swung around as I tried to put the finish on and I'd have to steady it as best I could by holding onto the coat hangers up top w/ my free hand (which didn't work very well):


This stuff is a combo stain/finish and before I applied it, I sanded it down to 400 grit, cleaned it w/ mineral spirits to get all the dust off and applied some pre-stain conditioner which is supposed to help the stain absorb more evenly. It worked OK on the front (and I do still really like the color):


But the back is streaky as a all get out:


I ended up deciding to sand it down and I'm going to have to redo it:


I think that ultimately, I'm just gonna end up making the back and the sides somewhat darker than the front. I think it will look pretty good regardless. I'm going to try to blend it into sort of a ghetto sunburst w/ the front. I'm sure there will be worse looking guitars in the world.

Saturday, June 2, 2007

The Hall of Shame

Yeah. The rumors are true. This is the first guitar body I've built and the first real woodworking I've done in my life so I fucked a thing or two up. Nobody's perfect. What can you do? Well--I'm gonna outline the mistakes I've made in the hopes that doing so will pound them into my head to such an extent that I do not make them again.

The thing that pisses me off the most is I did a round over along the edges of the little nub that sticks out for the neck pocket. I wish I had taken a picture but what happens is that the edges of the metal plate that goes on the back stuck over the edges of the round over just a little bit. I suppose the issue is mostly cosmetic since the joint still seemed sturdy but irritates me just because it wasn't caused by my lack of skill but simply from lack of thought. I probably didn't need to do anything but just for the sake of learning how, I filled it in w/ putty. The stuff I used is called Plastic Wood and fit the bill nicely in my case because it's both drillable and stainable (though it's pretty much impossible to get any kind of filler to match the wood). First I had to build it up w/ a putty knife (in layers so it dried right):


Then I sanded and shaped it with my random orbital sander and just sanding by hand (you can also see another little fill in the lower right):


I redrilled the hole in the upper left after this picture was taken. There were also some minor tear outs from the router that I filled in while I was at it. In the picture below, you can also see the filled-in gouge I made by carelessly lifting the router off the template before the bit stopped spinning. A moment of distraction can really cause a lot of grief in the end.


I didn't get the control cavity quite right so I ended up having to build up some little nubs w/ the Plastic Wood so I could drill little holes for the screws that hold the cover on. I'm not really worried abut these being too strong. Basically, I just want them to hold the screws in for the sake of appearance. I figure the two screws that can go into the actual wood will be plenty to hold the cover on.


These ones are small but they still tick me off because they were caused by carelessness. You can barely see them in the picture but there are a couple small fills there. One is by the pickup cavity and was cause by me marring it w/ the chuck of the drill when I was drilling the hole to the control cavity (which reminds me, I still haven't drilled a hole for the bridge ground). There are also two little crescent shaped ones on the bottom of the guitar which were caused by me not putting anything in between the guitar body and a clamp at some point in the building process.



There's also a couple tearouts just caused by my inexperience w/ the router. I'm not too mad about these--you gotta learn somehow--but they are still ugly no matter how you count it:


I'm using a dark stain on this and so far it looks like the fills are going to be fairly well covered up (though the finishing processes is proving to be problematical in its own right--more on that soon). Still, I have a lot of work to do if I want to start doing more natural finishes and I don't want it to look like crap.