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There's another storm brewing!

Thanks for the compliment. It is meant to be art as well as a tool. I've got no problem with an instrument being "just" a tool, but, there's so much opportunity to make it more than that, so why not? I know that when I'm playing SK1 and I glance down at my neck, I see those fret markers and that flame maple, and I want to play something great.

As far as caring for instruments, I try but I'm not in the museum-piece mindset. I know that I can be clumsy, that the headstock definitely will get banged, etc.--so I try to take care of an instrument, but don't let it hold me back from using it. I wonder how many Ritter Royals ever see a gig.


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Pickup Shells cont'd

I left off with the covers glued to the backer/extension wood. Here's the board cut up. Since I have only one shot with these matching covers, I am proceeding cautiously as I can. I cut apart the board,
DSC00423_zps4118659b.jpg

and then i wrapped the upper "template" portion of each shell with two wraps of blue tape. Then bandsawed pretty close to the tape, then edge sanded very close to the tape, to prepare for routing.
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I had seen something once about doing small detail routing using a pin near the bit, to pivot the workpiece off of. So I set up something similar, using the rounded corner of a small piece of wood.
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Then I routed to the tape, removed one layer of tape, routed again, removed the final layer, and finished. I used the rules for grain direction and climb routing etc. as well as I could, and got only a small bit of tearout.


Then I remounted the shells to the caul, and drilled the holes for the anchors, and used forstners to re-open the back to the cavity below that I had already routed. On anchor hole opened to the side of the shell when my drill table decided to rotate (dangit!), but it should be hidden out of view.

Then I had to clean up the openings. I used a chisel, with no problems until I was squaring up the last corner on the first shell, and - CRACK! %$&#$*#£†£ª•†∑¶!! One end split off. So, I will have to glue it back together. I'm not too worried because it broke along those wenge stripes, which should make it invisible. As matter of fact, when I was gluing on the back extension wood, glue had gone by capillary action up a crack in one shell front that I didn't even know was there, so it repaired itself.

I cleaned up the remaining shells using a dremel, which, should I do this again, I will start with.

Then I tried fitting a pickup in a shell. No go! Since my holes were exact-sized, and (as it turns out) the holes in the spacer that I used as a drilling template are oversized a bit, plus the fact that these are split coils which are not necessarily perfectly aligned, it didn't fit. I had a recommendation to drill the holes to the next larger fractional size, but I thought .016 larger may be too much, so I got out a #9 drill, which splits the difference, and opened up the holes. It came closer to fitting, and after some work with a rattail file, i got it in.
DSC00434_zpse8878d89.jpg


I future, I would measure the holes in the spacer, and use the largest possible drill that fits them, whatever that is.

The polepieces are sitting a little below the wood, which is fine since the faces haven't been sanded yet.
 
Thanks.


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Today I fitted the remaining two pickups to their shells. This also involved verrrrry carefully cutting a corner of the top plate of one pup, so that I could leave its shell with a little thicker wall, allowing more roundover on the top edge later on.

Then I dressed the break to remove stray fibers that would prevent full meshing of the two pieces, and glued it up. Of course when your shell is like a rhombus (and a curvy one at that), you can't just put a clamp across the ends long-ways because it will make the joint slip sideways. You need to make a clamping fixture.
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The fix for the break worked well. The epoxy is now setting in three covers, with the inserts glued in place.
DSC00440_zps83fdc8e0.jpg

The backsides are not pretty, but they don't need to be.

To set up the inserts I drilled the closest size to their OD without going over, then chucked the inserts up in the drill press, and reduced their diameters until the had a good fit.
 
Cavity Cover (magnetic)

I just finished the cavity cover. It was a bit of a process, but it's done. Here's a summary.

I had shown the drilling of the magnet holes, and mentioned the problems with getting the magnets. Well, I finally got the proper magnets. I also ended up keeping some of the undersized magnets (6 mm vs. .250" diameter, and too thin also). I decided to use the 6 mm magnets in the cover, since it would allow for more shaping, and use the full-size magnets in the body.

This was the only clamping method I could use when setting the magnets in the body, since I was using various metal objects over the surface, to pull the magnets flush, but dow in a recess.
DSC00441_zps34c60be8.jpg


This resulted in one magnet above flush, which I drilled out. What a job. It turns out that if you drill a neo magnet, it makes superfine powder, which then BURNS and ruins your finish. Luckily that one was a 1/4", and I was able to replace it with a 3/8" without ruining the design. Here's a pic from during the fixing.
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Here's a shot of the cover, drilled for the 6 mm magnets. The placement looks haphazard, but it's not. Some magnets are shifted off of their ideal mating positions, in order to get a side force when the cover is in place.
DSC00454_zpsda26f7b9.jpg


For drilling the wood for the magnets, I made some specialized drills, starting from brad point drills, which would drill as little as possible past the actual cylinder needed for the magnet. This is the one for the 6 mm holes. For this one I started with a 1/4" drill and also reduced the diameter at the tip.
DSC00456_zps67296936.jpg

Of course, if I had metalworking equipment, I could have just used a properly-sized end mill.

The cover as the magnets are glued in, with various ferrous objects to draw them upwards.
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And out of the clamps.
DSC00462_zps9527915b.jpg

The ugliness doesn't matter, since it will be covered with a black veneer. You can see where I had to dig out one magnet that flipped while I was gluing, and re-set it. Also, one magnet is marked in black to indicate where I had to put it in reversed, since the mate in the body had inadvertently gotten reversed.

The cover, inverted and with its black veneer, next to the cavity. After setting the cavity magnets I did an additional skim coat of epoxy fill and smooth everything.
DSC00466_zps6867af40.jpg


The cover in place on the cavity, to check the grain alignment. Perfect.
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After that put in the thumb notch on the body, then trimmed the cover on the router table with a template bit. And with that done, there was no way I couldn't do a little shaping on it. I'm pleased to say that but for the thumb notch, the cover looks from the side like it's a continuous part of the body, as intended.
DSC00472_zps80e2068e.jpg
 
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Damn impressive, Pete.
Thanks!

Have I mentioned that you continually amaze and astound?
Thanks, though I don't know what's amazing or astounding. The disappearing joint worked out well, I must say, and hopefully it remains that way after finishing. The separation is between a black veneer and a blue one, which was done with this in mind. As far as reshaping drill bits, it helps to have some years of working with tools to learn the point geometries – and it also helps to have bought the 200 count box of cheap Chinese brad point bits, which give you the ability to do some experimenting.

I haven't read this whole thread but why do you have threaded inserts in the pickups?
The pickups will be adjustable from the back. No visible screws on the face.
 
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Thanks, everybody. The encouragement is very encouraging.


Today, first I was thinking about finally gluing on the fretboard. So I printed out another pattern so I could mark the board for bandsawing off the excess.

DSC00473_zpsb47dcbf9.jpg

But that would make the board pretty fragile, and there were some considerations to take into account before glue-up. One is the headstock treatment, the other is the groove for the string anchorage.

(hmmm, sounds like time for a subtitle)


String anchor groove

The strings are intended to anchor through the body at a shallow angle, and have the ball ends captured in a groove so that they don't show on the outside of the bass. I had planned to cut a groove after the fingerboard was glued on and trimmed to the body shape, but the slotting bit I bought a while back is larger (depth-wise) than the size of the groove I need to have. Plus that would require yet another template to be generated.

So I figured I would cut the groove before putting on the fretboard. I cut some more view slots in the printout, transferred the curves of the saddle pockets, and drew an offset curve at an appropriate distance (appropriate as figured with CAD), figuring to freehand route to the pencil line.
DSC00475_zps10a39547.jpg


About this time I realized that I could use my bowl bit instead of a straight bit, and it could look nice. I set it up, and before cutting realized I would never be able to freehand rout to the line because it would be too hard to see, so I laid down some blue tape and cut it to the approximate line.
DSC00476_zps0303462f.jpg

It might be possible for people to rout to a line on maple or alder, but I could never do it on walnut.

It turned out better than I had expected. After some cleanup with sandpaper on a dowel, and a wipe with some thinner to remove the dust and prepare it for its Kodak moment, here it is.
DSC00478_zps3037d202.jpg


From doing this cut I got an idea on how to handle some details on the headstock, and also confirmed that I have to use a template to do the similar cut at the sides of the fretboard where it lies over the body. This one is more than smooth enough for a feature that will be mostly hidden, but it wouldn't pass the run-your-finger-along-the-fillet smoothness test. It's not perfect.


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Good enough for a beer though! This was really good. From a Vermont brewery that's new to me. Malty, fairly rich but not weighty, with a nicely balanced hop finish. Very drinkable.
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