- #COMPARE LYNX SCREW TO SPECTOR PRO INSTALL#
- #COMPARE LYNX SCREW TO SPECTOR PRO PRO#
- #COMPARE LYNX SCREW TO SPECTOR PRO PROFESSIONAL#
Schaller hardware is beautifully machined, but all their knobs are metric. We run into this quite often when we put metal Schaller knobs on a U.S.-made Tele.
#COMPARE LYNX SCREW TO SPECTOR PRO INSTALL#
Here's another problem: You want to install a knob designed for metric solid-shaft pots onto a U.S. Voilà-the split shaft is converted to solid-shaft specs and the knob will fit like a charm. We use super glue to hold this gap-filling piece in place and trim off the excess with a sharp knife and file. In the shop we use a piece of nylon that's already the correct thickness, so it's simply a matter of cutting out a piece of the right height and width to fill the gap.
#COMPARE LYNX SCREW TO SPECTOR PRO PRO#
The pro solution is to fabricate a piece of wood or plastic that slips precisely into the gap between the two halves. The quick solution is to position the setscrew in the gap between the shaft's two halves and tighten it very carefully. Our final piece of the knob-pot puzzle happens when you attempt to install a push-on knob on a solid-shaft pot, like putting plastic Strat knobs on a Tele. If you put this type of knob on split-shaft pots and tighten the screw improperly, you can break one or both halves of the shaft ( Photo 1). Typically knobs for solid-shaft pots use a setscrew to fasten them to the shaft. Let's say you want to put Telecaster-style dome knobs on a Stratocaster, but you want to keep the Strat's stock split-shaft pots.
One problem occurs when you try to install knobs designed for solid-shaft pots onto a split-shaft pot. You can customize a guitar by replacing its stock knobs with new ones, but, again, this can be perplexing. After the shaft pokes through the 3/8" hole, add a plain washer that's big enough to cover the hole, and then thread on the hex nut and gently tighten it down. The solution is simple: First slip a lock washer on the shaft and then install the pot.
However, most mil-spec pots have an 8 mm bushing diameter, so your 3/8" holes are too large by 1.5 mm. Sometimes mil-spec pots have a bushing diameter of 10 mm, which makes them a bit too big for the 3/8" holes in the pickguard or body. They're available in the typical 250k and 500k values and several bushing lengths, but they all have metric bushing diameters. Most military-spec pots and switches are made in Europe or Israel and are excellent for guitars. When modding guitars, you may face the opposite scenario of wanting to install metric pots in a guitar with stock U.S. It will only take about 20 seconds to enlarge each hole.
#COMPARE LYNX SCREW TO SPECTOR PRO PROFESSIONAL#
The professional solution? Use a sharp handheld reamer. Don't worry if the hole isn't perfectly circular-the washer will mask your dirty little secret. Instead, the quick-and-dirty solution is to use a sharp, fine-tooth round or half-round wood file to carefully enlarge the hole. Never try to enlarge a hole in a guitar or pickguard with your handheld drill and standard drill bit. The solution is to enlarge the holes from 8 mm to 9.5 mm (3/8"). The problem is the holes in the guitar are too small and the U.S. For example, Epiphone guitars have a very good build quality, but they often suffer from poor electronics, so replacing the stock metric pots with high-quality U.S. pots (measured in inches) in a guitar that sports metric electronics. The first scenario is a hot topic in guitar repair shops worldwide: installing U.S. (You can brush up on this essential info here.) Now it's time to discuss some typical pitfalls you might encounter when replacing pots or knobs on your guitar. Several months ago we examined potentiometers to understand how they're constructed.
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