Fillers and finishes used on LeBlanc Clarinets

I just came into a large quantity of blackwood clarinet tubes that I am repurposing for flute parts for one of my flute models. These were originally destined to be the keyed joints for LeBlanc Sonata and Espirit clarinets. Am curious if there are any former LeBlanc workers on these pages.

I would like to know what they used to fill the occasional flaw and what these were finished with. Anyone have any ideas?

The joints all are at the just before keying stage. No holes are drilled, except a pilot bore. I am able to ream these and return the outside to the diameters I need for my Folk Flute model see The blackwood is generally excellent.

Casey Burns
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