cylindrical staples?

I know that Hunter, Daye and Rogge (nowadays) use cylindrical, 4 mm interior diameter staples for their D concert pitches. What other pipemakers use them?

Another question: Which pipemakers use cylindrical, 3 mm interior diameter staples for their flat chanters?

Hans

Tim Britton uses cylindrical staples, made from brass hobby tubing (we find it in hobby shops, places that sell models and toy trains!). I don’t have the dimensions, but the tubing he uses for his C chanter reeds is the next diameter down from the tubing in his D reeds.
Tim’s chanter design includes a brass tube inserted into the throat, the next diameter up from the staple. The player can easily slide the reed in or out for tuning purposes.

As I said on the email list, I don’t believe Daye uses cylindrical staples.

Certainly the staples I got from him a couple of years ago were all tapered - they were seamless, but had a taper produced by ‘spinning’. They were a good deal larger in I.D. than the usually 4mm(or, in the US, 5/64") I.D. ‘hobby tubing’.

Sorry, I had probs with the f;:_*'g PC, so this is late. You are very right. Dave Daye wrote the he absolutely not uses cylindrical staples but tapered ones.
Wrong conclusion on my side: I reeded my Hunter several times and always used a tube-staple (always succesfully in a short time). I recently inserted a reed from a Penny-chanter into it and it plays perfectly. Some chanters appear to be a bit tricky while others (few) seem to be a bit more tolerant and accept several designs.
Hans