I need a low chinrest, but I like the "inside the jawbone" bump that an original Stuber or Edu chinrest gives - but they are too high on a viola for my neck length.
The Impressionist ( https://www.violinist.com/discussion/archive/13781/ ) allows one to shape the top of a low chinrest to such a contour, which may be helpful for downshifting and vibrato - at least it is for me
In addition to the archived 2008 violinist.com discussion I've linked to in the previous paragraph there was also a very informative violinist.com discussion in 2012
You can find the Impressionist Chinrest Cover for sale at Amazon, many on-line dealers and ebay for around $15 including shipping - for example:
I've recently been trying to find a substitute for the 2 original Stuber violin chinrests I donated to a youth orchestra and decided to try the Impressionist that is designed for permanently self-impressing your very own jaw/chin shape into the pad that sticks to the top of your chinrest. I tried that on a violin chinrest and found that was not a good substitute for the Stuber I was trying to copy - not enough freedom of motion with an exact match to my jaw. Then I had the BRIGHT idea that I could impress the top of my one remaining Stuber chinrest into the Impressionist and use that as a mold to create an exact copy in another Impressionist - so I made the mold (and refrigerated it so it would not be deformed by the heated material of the 2nd Impressionist I would use to cover my chinrest.
Well the 2nd Impressionist arrived this morning and I realized it was too large for my viola chinrest - so I cut it in half and had enough material to cover the two viola chinrests I wanted to modify.
These chinrests also have the rubber lining I have substituted for cork on all my chinrests. Even though an Impressionist weighs 42 grams, and thus my modification has resulted in 2 viola chinrests weighing 62 and 66 grams respectively with the additon of about 20 grams each, the instruments sound just as they did before the modification.
I still have another Impressionist coming - but I have since substituted my missing violin Stuber chinrests with a couple of very moderate price Edu chinrests that are practically the same.
If you try this, follow the instructions to the letter - it does not require "hot water" as the ads state, it requires 3 + 3 minutes of BOILING TEMPERATURE water - and 5 seconds of cooling under cool water if you are going to use your jaw for the impression, but if you are going to use a non-living mold for the impression, you do not have to cool the material. It can also be molded to shape with your fingers. and it does stick to the top of a chinrest, but it can be pried off with some effort (and remolded).
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