Andyjr1515

Wow!!! That is superb. And I struggle to get my head around how your did it. Lovely work generally, but that feature is a 'knock out of the ball park' jobee. Bravo!!

I would second @neepheid in terms of Artec's 'bang for the buck'. I can't think of any Artec product I've used or fitted that hasn't hit way above its weight and I've certainly used their lipstick pickups in my own guitars in the past.

Yes, absolutely. As @Hellzero says, small changes in the angle of the neck make a significant change to the action height. The Amazon link that @Hellzero puts on of the full-pocket tapered shims is also spot on.

It doesn't have to be. Accepting that any mod, good or bad, will reduce the resale value, then if the bass is potentially a keeper but you just want to make it more comfortable to play by taking some weight out of it - then you could do it from the back (upper horn, lower horn, either side of the neck run) without overly upsetting the balance and just leave the back with open chambers. It's a bit 'horses for courses'.

Be aware, by the way, that the amount of material you have to remove to make any tangible difference to the weight can be surprisingly high! You might find this thread for a very heavy Harley Benton I did a few years back for @Harryburke of interest:

Provided that you don't weaken the bridge area, it is unlikely to make any perceptible difference to the sound. And even those cases where the mods are so extreme that it does make a difference to the sound, it is just that - a difference, not a detriment. So, unless the bass is absolutely the best sound that you've ever experienced regardless of make, cost, type...then go for it. A bass that is too heavy is a bass that doesn't get played very often - if at all...

...and I'm assuming you don't have any proper nut files @Skybone The correct answer is 'take it to a guitar tech' but, if you are willing to risk having to do that anyway if it all goes wrong : What I would personally do for a bass - if my precious files got stolen on just the day I needed them - is: - use the new strings themselves as the nut file formers. This is tricky for a G string but, happily, you don't need to do that one - make a sharp thin pencil mark along the bottom of the nut slots - wrap a small piece of some 320-ish grit paper around the string - a half-loop only - hold the paper tight on the string with thumb and finger of both hands and gently file the slot back and forth - be patient...105 to 135 is quite a change - change the sandpaper from time to time - check the string fit without the sandpaper wrap from time to time to see the progress or lack of it - as soon as there is ANY sign that the pencil mark is being sanded away, STOP!!!! Be aware that properly slots are angled down a touch towards the headstock so that it is the very front edge of the slot that is the highest point. You may need to follow this angle as you sand if you find that the string is riding high at the back edge of the slot.

It was certainly an interesting veneer! This is how the final thing came out:

Most kind...but does Andyjr1515 know his epoxies from his onions?? Jury might be out

Well, the worst thing is if there is any area with not enough...that patch will bubble and raise with the moisture of atmosphere/subsequent finish spray/etc. You will be sanding the joint line in any case to use the epoxy in the joint to blend the veneer/joint/original finish, so a bit of squeeze out isn't the end of the world assuming that this is intended to be sprayed afterwards in any case.

With luck, your Jazz body would come out of the vacuum bag a bit like this: Then, ALWAYS cutting across the grain and not along it, you use the curve of the body sides as your blade guide: After some careful sanding along the line, again, across the grain line and not into it, it should blend in pretty well:

I've never tried applying veneer with epoxy (if I was doing this, I would strip it all down to wood then use the PVA 'iron on' method I've described in a number of past threads. However, there are both advantages and disadvantages of this too so epoxy isn't such a bad thought). But, assuming this is the standard flat-topped Sire Jazz, to use epoxy, I would be tempted to use a vacuum bag (like skate-boarders use or folks who want to store quilts in their loft). - I would cut the veneer a couple of cm large all-round and use a decent medium set epoxy (I think I would probably use Z-poxy Finishing Resin). - the veneer I would use would be close-grained, non-figured (the figured will likely split in the process). - with luck, the vacuum will not only help you achieve the close, flat bonding, but also start to curve the veneer a touch round the edges - when set, the excess veneer would be cut off with a single-edged razor or scalpel (must be super-sharp) from the top laying the blade from the top and using the curve of the top to use as a 'summit' for the blade to have point-contact only - then I would sand along the line of the joint with a sanding block, starting with something like 240 grit and finishing with 320 or finer I'll try and find some old pics of some of the things I'm talking about

Yes - I do the same 👍

StringsDirect also sell Switchcraft barrel jacks.

Switchcraft in my experience. That said, barrel jacks are a difficult concept from an engineering and materials point of view and so even the best won't last as long as, say, a Switchcraft standard jack.