Pono
Well-known member
I am using Grover geared tuning machines for my tenor ukuleles and I had a couple of questions for anyone who has experience installing them or similar tuners. I have a reamer and practiced on some scrap the drilling and reaming process and decided what diameter holes to drill in the peghead. My original plan was to drill a hole that was a bit smaller than the bushing for the tuner, use my reamer to make the hole so that the busing will just start to go into the hole, and then press the bushing in so that it fits tightly. After some more thought and looking online it looks like I have a couple of other options that might give me a better fit for the tuner post on the back of the peg head. One option is to start by drilling a 1/4" hole which is the diameter of the post and then reaming out the other side so that the bushing can be pressed in. Another option is to have the hole be stepped so that I start with a 1/4" hole and then use a peghead bushing reamer from stewmac shown here on their website http://www.stewmac.com/shopby/product/2062 that will end up making the 1/4" hole step to a lager diameter so that the 1/4" post has more support on the backside of the peghead. This process may require that I also use my regular reamer to make the bushing be able to pressed in. I am wondering how other uke builders have dealt with this issue. I know that the tension on a uke tuner post is not as high as it is for a guitar so it may not be a problem if the backside of the post is not supported by a 1/4" hole. I am reluctant to purchase one of the peghead reamers from stew mac because they are pretty expensive, I am not sure exactly which diameter to purchase, and I am not sure if they will work or are necessary. Also, I am wondering at what point in the building process everyone drills and reams the peghead. Any help would be greatly appreciated.