jordanmcdowell15 Posted October 19, 2022 Report Share Posted October 19, 2022 I'm about half way through with the sound box of my first viola. Im interested in getting some advice before I close it up, while there's still time to tweak things. I've searched and read many MN Viola making threads and that's where I got my basic idea of how I want to build the instrument. I'm not sticking strictly to any one specific set of plans or model. Now that I'm in the actual process there are areas in which I would like more specific guidance. I bought my tone wood from internationalviolin.com which is what I'm used to working with. I stole some ideas from the tertis model and wrote down everything I could find by luis manfio on the measurements of his builds along with keeping notes from other experienced makers. Here's my first question. Should I remove anymore thickness from the back? If so, where? Here is a graduation map. Hopefully you can read the numbers. The back still feels stiff to me but my only reference comes from my violin builds. The only tap tone I listened for was the one where you balance the plate on your thumb, tap the top bout while listening to the plate vibrate. I probably don't know what I'm listening for. The sustain is not bad and the tone is clear in my inexperienced opinion. The entire channel(just inside the purfling) is 3.5 mm and it has a 2 mm plate/rib overhang. There will be less than usual recurve or scoop at the plate edges(tertis idea). Surely you do not have enough information yet, so Im happy to provide anything else that may help someone give advice. Thanks in advance. Overall length 417 Upper bout width 190 Middle bout width 134 Lower bout width 258(tertis idea) Back arching height 18mm Thickest area is placed at 223 mm from the bottom... Reverse stop position Back weight 185 gm before scraping the pencil numbers(seems heavy) Rib height is a steady taper from 40 mm at the end pin to 35 mm at the neck. Garland weight 78 gm Quote Link to comment Share on other sites More sharing options...
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