Hello all,
I have a need for this knob to finish up the restoration on a nice Gilfillan Bros. model 521 - T
The knob set is made up of a small knob (for the tuner) and three larger knobs (on/off, band switch and tone)
They are not lettered so that is not an issue
I have two of the large ones and the one small one but I need another larger knob.
I will buy one or if you have a set that you do not wish to split up, I will buy them all.
It accepts a full round shaft with a set screw and has a metal insert. It is 1-1/8" wide and 11/16" with fairly distinct pattern on it, kind of like a raised bullseye. I will attach a few pics so you can have a visual reference.
here are pics of the knob:






thanks
~jeff~

Anybody have one of these in your parts bin?
thanks for taking a minute to look for me........

~jeff~

Since you have an original, you have a template. If you can get a knob insert, you could turn your own. A drill is a possibility but I adapted a sewing machine motor for that purpose years ago. The shaft of the motor is just right to attach the knob insert to for turning and the motor is variable so you can use faster rotations for cutting wood and slower turns for sanding/finishing. I've made some knob replacements over the years and they came out perfect. Yours is one of the simpler designs to recreate. It's best if you can start with round stock but if that isn't possible, cut a block into an octagonal shape a little larger than you need to reduce the strain on the motor and make cutting easier. You wedge the insert in, drill for any set-screws and mount it on the motor shaft. The first efforts may not work out for you but it isn't all that difficult. Take your time and keep measuring and checking the shape you are reproducing. You will soon find optimum rotation speeds to get the results you want. You can even do the floral faced knobs since the floral faces are available on the internet and can be glued onto a home turned knob. Just stain the completed knob to match the rest of the knobs on your set.