Re: [Harp-L] Slot Embossing and Accordions




On Feb 1, 2010, at 5:23 AM, Rick Epping wrote:

I'm differentiating between coining and embossing. By coining at a remove from the reed slot edge - about 0.5mm in the case of the Hohner accordion reed shown in the photo, the reed-to-slot gap can be narrowed without any lowering of the slot edge. But as I said, I found coining harmonica reedplates to be problematic.

Oh, Ok, I was confused. What you were calling coining, I was thinking of as reeding or knurling. According to your picture, the striations placed on the edges of precious metal coins (in the old days) to keep people from scraping the edges. Now I understand.

All slot edge embossing will lower the slot edge to some degree but coining at a remove from the slot edge will not. I agree with you about using a large diameter embossing tool when embossing both slot sides at once. The embossing tools I use are shown here:

Your tools are similar to mine. I use wine corks to hold tools. My light box is 18x24 (made it for the wife), and I use a separate overlapping lid for my plates. I use a 6.5X Dazor magnifying lamp. I don't do much any more. My hands are shot. Maybe the onset of Parkinsons.

http://docs.google.com/Doc? docid=0AZ6Y28n7JwtSZGNra24yZDZfMjJtNm14NGdmOA&hl=en


A reed is raised above the slot at the free end but not at the rivet end. If you emboss only part way back to the rivet end then it shouldn't be necessary to lower the reed at the rivet end. But embossing the entire reed slot will leave a gap at the rivet end that can only be closed by lowering the reed there.

I would only go 2/3rds. Soooo, after much ascertainment, I'm not taking back anything I ever said about you. ...I said you were a genius. :)
Thanks so much for your reply.


smokey-joe



Rick




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