Search found 368 matches

by Craig Bumgarner
Tue Apr 26, 2016 1:16 pm
Forum: Glues and Finishes
Topic: General Finishes Waterbase Topcoat - SM is pushing this - anyone tried it?
Replies: 230
Views: 182577

Re: General Finishes Waterbase Topcoat - SM is pushing this - anyone tried it?

I have to work out some spraying issue. Like why the gun keeps clogging up with EV, had to stop and run water through the gun every 30-40 seconds. I was talking with my painter friend at work and he thinks my "clogging" every 20-30 seconds problem is that the vent in the cup cap is clogged. That so...
by Craig Bumgarner
Tue Apr 26, 2016 11:08 am
Forum: Glues and Finishes
Topic: General Finishes Waterbase Topcoat - SM is pushing this - anyone tried it?
Replies: 230
Views: 182577

Re: General Finishes Waterbase Topcoat - SM is pushing this - anyone tried it?

Little update: I used sprayed EV Satin for my latest and am pleased with the results. Personally, my preferred aesthetic is high gloss, but the customer wanted something flatter. I sealed the walnut neck and the spruce top with Seal Lac and the back and sides with EV Gloss (no particular reason I us...
by Craig Bumgarner
Tue Apr 19, 2016 8:41 am
Forum: Glues and Finishes
Topic: General Finishes Waterbase Topcoat - SM is pushing this - anyone tried it?
Replies: 230
Views: 182577

Re: General Finishes Waterbase Topcoat - SM is pushing this - anyone tried it?

Shellac has its charms, that I think we all really like, but it is not nearly as tough as this stuff (not even close). Agreed, the main problem I've had is a sweaty player can strip the finish off at the contact points in a single hot session. Alternatively however, I've been very pleased with Roya...
by Craig Bumgarner
Mon Apr 18, 2016 2:46 pm
Forum: Glues and Finishes
Topic: General Finishes Waterbase Topcoat - SM is pushing this - anyone tried it?
Replies: 230
Views: 182577

Re: General Finishes Waterbase Topcoat - SM is pushing this - anyone tried it?

Bryan, I'm sure Chuck will chime in, but on my test pieces of spruce mentioned above, I'd say clarity was very good for both over bare and over shellac. Over bare, the spruce turned out a little darker and over the shellac'd pieces a little lighter and a bit more uniform. These difference were very ...
by Craig Bumgarner
Mon Apr 18, 2016 9:35 am
Forum: Glues and Finishes
Topic: General Finishes Waterbase Topcoat - SM is pushing this - anyone tried it?
Replies: 230
Views: 182577

Re: General Finishes Waterbase Topcoat - SM is pushing this - anyone tried it?

An industry test for adhesion is to cut the finish with a sharp knife in a cross hatch pattern about 1" square and then apply tape to the surface and rip it off. If it passes that, plus your tests above, it is probably as good as it gets. Last week, I applied E-V Satin to a scrap of spruce that I ha...
by Craig Bumgarner
Wed Apr 13, 2016 9:33 am
Forum: Tools and Jigs
Topic: Is this too much for an edge trimming/flush cutter?
Replies: 19
Views: 13630

Re: Is this too much for an edge trimming/flush cutter?

Probably too late to help the OP, but for cutting plates flush with the sides, I use a Dremel tool with a Stewmac (or Veritas) router base, a 1/8" downcut router bit and the Stewmac edge guide (Item # 4324) . With this setup, it doesn't matter how wide the edge is, the bit is acting more like a saw ...
by Craig Bumgarner
Fri Mar 25, 2016 2:09 pm
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: Double sides
Replies: 34
Views: 21247

Re: Double sides

I have also gone to a clamping system but I use an inside form with lots of bolts and bars. I use a somewhat flexible 1/4" plywood caul on the inside to help spread the clamping loads and a slightly concave cauls across the width of the side and a single clamp. These clamping cauls are 5/8" x 5/8" ...
by Craig Bumgarner
Fri Mar 25, 2016 11:44 am
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: Double sides
Replies: 34
Views: 21247

Re: Double sides

The book(s) by Gore & Gillet discuss in considerable detail the effects of more massive sides and side mass loading. I laminate my sides with four layers, cosmetic .5mm veneers inside and out and two layers of cross grain 1mm poplar on the inside, 3mm total. Very rigid, probably impossible to crack ...
by Craig Bumgarner
Wed Feb 10, 2016 5:51 pm
Forum: Wood and Materials Q&A
Topic: grain orientation for solid maple binding
Replies: 10
Views: 7282

Re: grain orientation for solid maple binding

+1 on SuperSoft 2, hot pipe and no water for curly maple bindings.
by Craig Bumgarner
Tue Nov 17, 2015 11:23 am
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: Concave fingerboard on vintage guitar
Replies: 7
Views: 3844

Re: Concave fingerboard on vintage guitar

Here ya go. Mauer, concave fingerboard.jpg Roger on brittle fingerboards. Some of the old French guitars I work on have fingerboards made of pear wood dyed black, they crumble to bits when pulling frets, no way can they be saved. No a big deal as I'm usually replacing the fingerboard anyway. Rather ...
by Craig Bumgarner
Mon Nov 16, 2015 6:04 pm
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: Concave fingerboard on vintage guitar
Replies: 7
Views: 3844

Concave fingerboard on vintage guitar

Just to be sure, no guitar, vintage or otherwise should have been made with a fingerboard that is concave across the board, right? It is warped, right? 1916 Maurer acoustic, cheap model but nice in its own way. I'm assuming the fingerboard was originally flat, no radius, and it has warped into a con...
by Craig Bumgarner
Mon Nov 16, 2015 7:35 am
Forum: Archtop Guitars and Bass Guitars
Topic: body wood choice to go with flamed redwood top?
Replies: 17
Views: 10732

Re: body wood choice to go with flamed redwood top?

Mahogany would go well with the redwood both in grain and color.
by Craig Bumgarner
Fri Nov 13, 2015 12:06 pm
Forum: Glues and Finishes
Topic: Drop Filling
Replies: 6
Views: 4898

Re: Drop Filling

Michael Lewis wrote: It boils down to "make it happen". It always does.
So true. I saw a FB post today of an Oscar Wilde quote: "Experience is the hardest kind of teacher. It gives you the test first and the lesson afterward."
by Craig Bumgarner
Thu Nov 12, 2015 3:57 pm
Forum: Glues and Finishes
Topic: Drop Filling
Replies: 6
Views: 4898

Re: Drop Filling

How do you think lacquer would work over FP, Royal Lac actually.
by Craig Bumgarner
Thu Nov 12, 2015 3:05 pm
Forum: Glues and Finishes
Topic: Drop Filling
Replies: 6
Views: 4898

Drop Filling

Any suggestions on what works well? Usually minor gaps and low spots in the bindings, but too big to fill with FP. Here is what I have tried in the middle of my shellac FB finish schedule: Shellac , dropped in. Works eventually, but slow because once the alcohol evaporates, there isn't much there, t...
by Craig Bumgarner
Thu Nov 12, 2015 10:58 am
Forum: Glues and Finishes
Topic: Wipe on finishes survey
Replies: 11
Views: 12664

Re: Wipe on finishes survey

Waddy, How long do you wait before wet sanding? Do you wet sand between application sessions?
by Craig Bumgarner
Tue Nov 10, 2015 5:17 pm
Forum: Glues and Finishes
Topic: Wipe on finishes survey
Replies: 11
Views: 12664

Re: Wipe on finishes survey

Be careful with moisture and Royal Lac until it is fully set. It will polish up sooner, but full moisture resistance takes 30 days. I delivered a guitar with Royal Lac for a customer in a hurry and he took it a couple days after the finish was applied. On day 16 after application, he played an outdo...
by Craig Bumgarner
Tue Nov 10, 2015 3:51 pm
Forum: Glues and Finishes
Topic: Wipe on finishes survey
Replies: 11
Views: 12664

Re: Wipe on finishes survey

I've tried most everything short of UV cured urethanes and catalyzed polyester. Royal Lac is what I use consistently. You don't have to apply it like FP though. I do when I want the highest gloss, but if my customer wants a low gloss, I wipe it on with a pad made of tee shirt cotton, no oil. I'm not...
by Craig Bumgarner
Mon Nov 09, 2015 11:35 am
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: soliciting some honest critique and direction
Replies: 28
Views: 10789

Re: soliciting some honest critique and direction

I've found deflection testing to be very worthwhile. It helps quantify a whole world of specific understanding about the top that here-to-fore was only possible by many years of experience, trial and error and a fair amount of hokus pokus. Keep in mind the difference between a good guitar and a grea...
by Craig Bumgarner
Mon Oct 19, 2015 9:25 am
Forum: Glues and Finishes
Topic: General Finishes Waterbase Topcoat - SM is pushing this - anyone tried it?
Replies: 230
Views: 182577

Re: General Finishes Waterbase Topcoat - SM is pushing this - anyone tried it?

How is the hand feel? On some of the WB finishes I have used, there is a fair amount of drag to the finish surface, not good for necks.