ApplianPar T Shape Handle Taper Reamer 3-13mm and 5-16mm Bridge Pin Hole Hand Held Tapered Reamers 6 Fluted Chamfer Chaser Reaming Tool for Woodworker Guitar Luthier Cutting Pack of 2

These work great to put full size CTS pots in my guitars.

Well made and very effective. Reamed out several holes in various pieces of wood very quickly. Edges are super sharp, the build quality is high and the steel is nice. Good tools for the money.

Cuts a nice taper for my guitar tuning pegs. Many times cheaper than dedicated version. Although, the metal handle rod is a pain to use. If I used everyday, it would be for the extra at the guitar supply houses.

Title says it all. I bought the Disens acoustic guitar rosewood bridge, the bridge pins holes of which were not fully drilled. Once I glued the Disens to my guitar, I used a 13/64" bit to drill holes of that diameter. They were then (by design) too narrow for the Disens bridge pins, hence the need to buy this reamer. The larger one was too big, but the smaller one ("3-13mm" aka "1/8inch - 1/2 inch") worked just fine. I can't tell if it's "high quality" and will last your lifetime, but it worked well for this one job (and could probably work for a few more bridge replacements too).

Product came to me fairly sharp, I wish it had a smooth side to keep from walking the hole in one direction. I was able to get the job done, but there are better products out there for a similar price.

I used the reamer with a 5 degree taper to enlarge the loose bridge pin holes so I could fit oversized Bridge pins On my 6 string acoustic guitar. These reamers we're over $100 cheaper than the local guitar shop wanted. The 5 degree one worked perfect!

I can’t use these.See photo. The cutting edges catching the light means the edges are dull. It may be due to them being packaged loosely with the steel handles and rubbing against each other during shipment. There were also lots of burrs and shavings in the bag.Acoustic guitar bridge pin taper is usually 3 degrees. I measure these cutters at between 6 and 7 degrees.In my experience tapers over 5 degrees don’t hold as well. In any case I’m not going to significantly change the taper of my bridge pins and holes.This is less important for the end pin.Regardless of the low price I’m not going to use cutters that don’t cut (they gouge and tear the wood) and are the wrong geometry.

I purchased the reamers to do some work on a couple of guitars I had. I was changing the bridge pins on both guitars. I was changing from plastic to ebony bridge pins. I had to ream the holes a little bit larger to accommodate the new pins. The reamers worked great. Easy to use. Made the job easy to do.

In all honesty they didn’t work. It is a little complex to tell you why but in essence the flutes appeared not to be cut at the correct angle. I bought another one from a luthiers and it worked perfectly.