My 1st Partscaster Journey

Tristan____C

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A long post on my tele journey. Questions and build photos to follow.

Aim / Background
I’ve spent the last few years designing and building my own valve amps (guitar, then also hifi) seeking ‘the perfect living room amp’. Partner friendly, not too loud, and capable of doing a passable attempt at the clean to mean thing with a twist of the guitar volume knob. So, ideally, just guitar -> cable -> amp to cover cleanish to med/high-ish gain. Or adding a clean boost to go a bit higher gain. This covers me for my usual ‘playing along with youtube’ activity.

During this journey I realised the benefit of a twin humbucker / 4 control guitar. I can go from sparkly clean (coil split neck selected, volume rolled down, tone rolled back) to high gain (bridge selected, on full vol, tone somewhere in the middle) with the flick of the selector. I do this on my SG-style guitar. Doing the same with my Strat (’96 US Std) would take a bit of knob adjustment, and isn’t quite as easy.

My Strat has sentimental value (1st decent guitar, I look after it etc). My SG is great, but I can’t play the neck as easily / as well as I can the Strat. Perhaps something to do with neck radius or scale length.

And I have a 7-month-old boy so my at-home set-up will need to change…

So… I set upon getting a guitar that could live in the living room and could take a beating. “Cattle, not a pet.” A twin humbucker blend of a Fender and an SG. Basically a Tele Deluxe.

Change of Approach
I looked at the available options (Fender, Squire, Harley Benton etc). Stock models came close, but never quite 100% there. And, given I haven’t looked at guitar prices for 8 or so years, or bought a new guitar for 20-odd years, I couldn’t believe the cost of the US Std equivalent of today! Nor could I believe the cost / quality of the Harley Bentons etc. Besides, I don’t think a new guitar would suit - I’d be too protective of it.

I couldn’t find a used guitar that was sufficiently ‘used’ to overcome this protectiveness.

So I looked at assembling my own - where I started reading other sections of this forum I had hitherto skipped. This lead to a few weeks of researching / trawling eBay / planning etc. costing things out and assessing how much “DIY” I was able / willing to do. (Finished vs raw, pilot holes drilled vs blank etc)

However, upon reflection, I thought “what’s the point of adding another twin humbucker guitar to my collection. Wouldn’t it be better to add another ‘sound’ to the set?”

The Tele bridge sound, the Tele utility, but with the individual controls.

Relic?
I’m fully aware that if I assembled a partscaster I’d do it as best I could, I’d protect it, I’d treat it as a loved pet. Which isn’t the point of this guitar. That’s when I considered the idea, which I’d always considered naff, of a relic’d guitar body. One that already has some bumps and scrapes. So that I’m not the one to make the 1st dent in the finish.

This seemed a good approach. A beat-up body with decent electronics, a decent neck and tuners. What could go wrong?

Controls / Pickups
Combining an off-the-shelf body with my wished-for controls and aesthetic was going to be difficult. Until I spotted a relic’d body on eBay from a UK seller with a neck humbucker rout. Bingo.

Standard bridge, standard control plate, no scratchplate. Single coil at the bridge, humbucker at the neck.

Now, could I do the individual controls for each pick-up? Yes, stacked concentric pots.

Could I go further and coil split the humbucker? Or even coil tap the bridge? Could I do both without adding 2 toggle switches? Yes. The Free-way switch.

All boxes ticked!

So I went for a Seymour Duncan STL2T - a hot tele - pickup for the bridge. This means I can tap it and get two levels of output and two sounds. In theory.

The neck selection was more difficult. The SD SH1N (the 59) was the obvious choice. But finding one at reasonable cost was nigh-on impossible. So, trying to spend a bit more locally, I went with a Monty’s PAF. They are highly regarded, and also come in aged nickel.

Other Part Selection
As the jigsaw was coming together I spotted a neck from a UK seller - 22 fret roasted maple, satin finish, 9.5” radius. Basically something close to my Strat neck. I hope.

For the rest, I sourced relic’d parts from a range of places online. Going for as cheap as I can whilst maintaining quality.

The only non-relic’d bits are the strap buttons, tuner bushings, the control plate and knobs. The metal parts will need some thought (bashing + acid / etcher). The bridge pick-up has the annoying SD logo…

I'll update my journey in this thread as best I can.
 

Tristan____C

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Ready to go!

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Tristan____C

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And 1st issue. The tuner holes on the neck (roasted maple) are (a) not 10mm and (b) not circular.

I've got a reamer (as per advice I've seen elsewhere) to enlarge the holes. But will that also make the holes true?

With Kluson tuners there's not much wiggle room if the holes aren't where they should be...
 

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Tristan____C

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I had a couple of hours free this morning so went full-steam ahead. I reamed the tuner holes out, checking every turn for fit with the ferrules. A little sanding was needed to get rid of a few shards of wood sitting proud. I got the holes to the size where the ferrules dropped in to the end of the 'ribbed' part.

Then I decided to relic them a bit. Sandpapering then a light bath in hydrochloric acid (10 or 15 mins) followed by another 10 or so minutes in some oxidising accelerant.

I pushed the ferrules in by hand, then made any minor adjustments with a dowel and a bit more force (again by hand).
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Then came the drilling of the pilot holes. I did my best to get the tuners straight and marked out the holes. I drilled them using a ~2mm bit, test inserted each screw with some wax, then started loading up the tuners. It all went well apart from one screw hole between the G & B strings - so there's a slight kink in alignment... Good enough.
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Given the success in relicing, I went ahead and did the same with the string ferrules and bridge saddles. The ferrules slipped in with a bit of hand force from a dowel. And I'm happy that the shiny Gotoh saddles are now a little duller. As if they'd been played for a couple of months.
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Tristan____C

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Looking sweet! Any updates?
Ha, things are going slowly as the 7 month old is now an 8 month old and taking up all our time! I’m hoping to get a few hours this weekend and next to make some progress. Thinking drilling the bridge holes, humbucker mount holes and doing the metal work on my control plate. And maybe some soldering. Let’s see how far I get…
 

Scuba_1978

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Ha, things are going slowly as the 7 month old is now an 8 month old and taking up all our time! I’m hoping to get a few hours this weekend and next to make some progress. Thinking drilling the bridge holes, humbucker mount holes and doing the metal work on my control plate. And maybe some soldering. Let’s see how far I get…
Believe me, I understand. I owned a guitar from the time my daughter was 2. I didn't get to seriously practice or play it until she was a teenager. Good luck with your build!
 

MidwestLuthier

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Ha, things are going slowly as the 7 month old is now an 8 month old and taking up all our time! I’m hoping to get a few hours this weekend and next to make some progress. Thinking drilling the bridge holes, humbucker mount holes and doing the metal work on my control plate. And maybe some soldering. Let’s see how far I get…
My son is just over a year and a half. When I think back I don't know how I managed to get anything done... when they are so little it seems like all they do is nap... poorly lol. Take advantage of those naps, and involve them in the process as much as you can when they're awake (not spraying, nut cutting, or anything else dangerous obviously). I know it sounds crazy but my son loves being around me working on guitars now. He'd relic everything I do if I let him have his way.
 

Tristan____C

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Progress has been made!

IMG_2847.jpeg

I managed to grab a couple of hours today to get everything bar the neck fitting and electronics done.

- Did some more kitchen chemistry to age the chrome knobs, neck plate and and control plate
- Drilled the control plate but made a ridiculous mistake by piloting the first hole in the wrong location… Then compounded it by drilling the intended location off centre, so the toggle switch won’t fit in the cut out. A new control plate has been ordered.
- fitted the pickup mount and pickups.
- fitted the strap buttons and input jack.

I might try to do some soldering tomorrow assuming I can transfer the pots / switch over from one control plate to the other - allowing for some flex in distances between the holes etc.
 

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Tristan____C

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Thanks for the kind comments.

More progress to report!

With a few passes of a round file I made the toggle switch hole a bit more central - central enough you can hardly notice it's a bit off. And I actually quite like the accidental hole too. A story to tell.

I managed to start on the electronics too but hit a snag - started a new post for that. I rushed the soldering so it's not as neat as I'd like, but no-one's going to see it...

I've yet to decide on what treble bleed arrangement to use - I've a Kinman in my strat, and a basic cap in my SG. Both work well, so this might be a decision for after I've played the assembled guitar for a bit. Hoping to get some help on the wiring so I can finish the body this weekend and get it to a local luthier for the neck installation / fret dress / nut cutting.
 

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Boreas

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Those pots are pretty shiny - gonna "tarnish" them as well?

Great work! Thanks for the reports! Don't scratch it when getting it set up!;)
 

Tristan____C

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ha - I still haven't convinced my wife on the 'why' of all this. Why would I "make a new guitar that looked old?" But it is refreshing not giving a damn when loose fitting parts / placing the screwdriver where it's handy rather than where it's not going to damage anything etc etc. I was (and still am) protective over my guitars almost to a fault.
 

Tristan____C

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The wiring is in place. I've tacked some of the connections in place until I can confirm the phase / polarity question is solved. I included a Kinman treble bleed (220k + 1nF in series). It passes a signal (tapping the pickup with a screwdriver) and the switching works as expected (I think).

Now to get the neck on, nut cut and fret dress (and string trees fitted).

It's looking good even if I do say so myself.
 

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martinlb

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Then came the drilling of the pilot holes. I did my best to get the tuners straight and marked out the holes. I drilled them using a ~2mm bit, test inserted each screw with some wax, then started loading up the tuners. It all went well apart from one screw hole between the G & B strings - so there's a slight kink in alignment... Good enough.
that's got me putting it off until I've just got to finally do it. Those darn tuners - I can get them aligned with a straight edge along the bottoms like you did and they look pretty good.

But then I look at the angle and spacing between the pegs and start seeing things. Are they spaced exactly the same? Is the angle of each one right?

Mostly what I'm concerned about is having one or two ending up standing out because of not being near to perfectly positioned. It's the angles I'm worried about. I just don't want something standing out and catching my eye every time I pick the guitar up.

I've got to do it, so I'll bite the bullet. Maybe I'll find a way to fit something between them to see that they're spaced equally and angled as needed. But one way or another it'll be done.

You're doing nice work!
 

Scuba_1978

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My son is just over a year and a half. When I think back I don't know how I managed to get anything done... when they are so little it seems like all they do is nap... poorly lol. Take advantage of those naps, and involve them in the process as much as you can when they're awake (not spraying, nut cutting, or anything else dangerous obviously). I know it sounds crazy but my son loves being around me working on guitars now. He'd relic everything I do if I let him have his way.
My daughter used to love helping me "work" on cars. She would waddle around in her diaper and hand me tools. There's not much cuter than a 2-1/2 year old girl with big curly hair handing papa the right sized wrenches!
 
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Tristan____C

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The neck is on. I got a local luthier to do the actual fitting and do the fret/nut work. I’m glad I did - the neck was loose in the socket so was a bit fiddly to get straight, and there were a few frets that needed levelling and edges rounded etc. So worth it.

It plays well. The neck is a bit chunkier than my strat, but not by much. I’ll adjust the action / relief once things have settled a bit.

However, there’s an issue with the electrics. I must have messed up somewhere…

- The tap on the bridge makes no audible difference - so there may be a solder bridge on the switch pads or I’m merely selecting between the two sections of the winding with the switch instead of lifting the ground point...

- The vol and tone pots don’t taper as I’d expect - basically acting as on-off switches (vol) or having hardly any impact until the end (tone). So I’ll take out the treble bleed and check the tone cap value / general wiring before looking at the pots themselves.
 

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Tristan____C

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- The tap on the bridge makes no audible difference - so there may be a solder bridge on the switch pads or I’m merely selecting between the two sections of the winding with the switch instead of lifting the ground point...
Resolved. Yes, there was a tiny, practically invisible, bridge between two pads on the Freeway toggle.
- The vol and tone pots don’t taper as I’d expect - basically acting as on-off switches (vol) or having hardly any impact until the end (tone). So I’ll take out the treble bleed and check the tone cap value / general wiring before looking at the pots themselves.
This is still an issue. Correct wiring and tone cap values. But the pots basically work as switches. Very little play in the tone control and the volume is like a switch at 9/10. These are Alpha dual concentric pots - a quick google seems to suggest people don't like the taper on these?
 

Tristan____C

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Another update based on a couple of weeks playing. I couldn't leave the controls the way they were: the taper and the lack of tone control range was terrible. And there was definitely something up with the HB wiring - a lack of treble...

So, I threw money at the problem and ordered stacked CTS pots (originals were Alpha), a range of new capacitors, new cloth wire (a 1st for me) and, due to the new pots, really stupidly expensive chrome knobs to fit the CTS shafts. This guitar is a money pit...

Last night I re-wired everything - this time using the pots and control panel as a ground plane (before, I controlled the grounding scheme). Doing this I discovered the clever Free Way switch internally connects its ground pads to its toggle / metal enclosure. My previous endeavours were a waste of time...

Differences this time:

- 0.047 uF on the single coil 250k pot (from 0.02 uF)
- 0.02 uF on the HB, on a 500k pot with 470k in parallel
- CTS pots

'Standard' treble bleeds (cap + resistor in //) remain.

I also had to file the high-E hole on the bridge - I've lost 2 strings snapping there so there must have been a sharp edge. A thin round file was used to add a slight angle. Let's see if it makes a difference.

Outcome:

Wow. This is what I had in my head. The treble is there. The HB can squeal. The bridge needs to be tamed. Perfect. The control range of volume and tone are useable! CTS pots for the win! I can do clean to mean with ease. 6 usable sounds via the selector switch, and the SC and HB are quite balanced.

Now I've to relic the new knobs when they arrive (tomorrow all being well) and have a final tinker with the HB tone caps.

Getting there!
 

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