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| Author: | JSDenvir [ Fri Apr 08, 2011 8:54 am ] |
| Post subject: | Tuners and bushings |
I'm using my first set of tuners that include a bushing that requires a wider hole than the tuner shaft. I know StewMac has bits designed specially for this. Is there a simpler way to drill the hole for the bushing? Thanks in advance Steve |
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| Author: | meddlingfool [ Fri Apr 08, 2011 9:23 am ] |
| Post subject: | Re: Tuners and bushings |
Sure. Drill a 1/16 pilot hole all the way through. Drill your smaller hole for the shaft about two thirds through from the back using a brad point. From the front drill the bushing sized hole just deep enough for the bushings, again with a brad point. The Stew Mac bits are really great though, but they still require a pilot hole going all the way through to track off of. |
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| Author: | Laurent Brondel [ Fri Apr 08, 2011 11:55 am ] |
| Post subject: | Re: Tuners and bushings |
The pilot hole method is too imprecise. The SM counter-bore reamers are the best, they have a 1/4" pilot tip. it's just a matter of drilling 1/4" holes and counter-boring to the depth required afterwards. Before the SM reamers I used another method. Drill your 1/4" holes on your peghead. Then clamp a thick backer board on your drill press table, drill a 1/4" hole in it (with the drill press) and slip a 1/4" rod in the hole (an old router bit shaft is perfect). Do not move anything on your drill press, but change the 1/4" drill bit for a 11/32" one (or whatever size your bushings require). Now it's just a matter of slipping every tuner hole in the 1/4" rod (back of the peghead down) and drilling at the depth required. That guarantees centred tuner shaft and bushing holes. I strongly advise to clamp the peghead at the table for every hole to avoid tear-out… and worse. |
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| Author: | JSDenvir [ Fri Apr 08, 2011 2:20 pm ] |
| Post subject: | Re: Tuners and bushings |
Thanks everyone. Sounds like the StewMc reamers are the way to go. Steve |
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| Author: | Kevin Mason [ Fri Apr 08, 2011 3:33 pm ] |
| Post subject: | Re: Tuners and bushings |
Is it really necessary to have the tuner shaft supported at the base of the tuner by that seemingly little bit of wood? I have been assuming that, with a well-made tuner, the bushing provides enough support against the pull of the string. |
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| Author: | nickton [ Fri Apr 08, 2011 11:00 pm ] |
| Post subject: | Re: Tuners and bushings |
I think I know what you mean. That little thin area of wood support doesn't make much difference. Why not just bore through one size. I'm sure many people do this anyway. ![[:Y:]](./images/smilies/smiley20.gif "Thumbs Up") that said I checked out the stewmac bushing reamer and it looks like a worthy investment too. |
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| Author: | Laurent Brondel [ Sat Apr 09, 2011 9:38 am ] |
| Post subject: | Re: Tuners and bushings |
The devil is in the details… |
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| Author: | Terence Kennedy [ Sat Apr 09, 2011 10:02 am ] |
| Post subject: | Re: Tuners and bushings |
Be sure to use the StewMac reamers in a drill press at low RPM (around 200). At least that's what works best for me. They are definitely the way to go. Here's a cheap gadget to install them. http://wellsguitars.com/Articles/Bushing_Tool/index.php |
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| Author: | Link Van Cleave [ Sat Apr 09, 2011 12:17 pm ] |
| Post subject: | Re: Tuners and bushings |
That is a nice little gadget. To make it even easier to make I would make it out of square stock instead of dowel. And just counter sink a bolts head in the end in stead of pinning the thread. Square stock is more likely to be around your shop or easier to produce, much easier to drill a straight hole and get the faces 90° to the bolt. One could round it or make it a octagon after. L. |
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| Author: | David Newton [ Sat Apr 09, 2011 12:33 pm ] |
| Post subject: | Re: Tuners and bushings |
Tuners with bushings: the chrome plated shaft is supported at both ends with steel bearing surfaces, good enough for about every engine and machine on the planet. That being said, I bore and counterbore with the correct Stewmac bit... |
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