Dominik Tomasek

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Everything posted by Dominik Tomasek

  1. Besides the 17th century thing... What does it play and sound like?
  2. I have no idea since I have never seen the instrument. But I assume not.
  3. violin Rus, thanks for the reply! I know there are church basses with spruce back and I am also well aware of some cheap factory made celli which also present a spruce back. Do you have any pictures of that instrument? I find this story about Testore and his all spruce cello rather interesting thus I am seeking information regarding this particular instrument.
  4. Dear colleagues/Maestronetters Although I know that this kind of topics usually does not have too many replies I am still willing to try it. I am please seeking as many information as possible regarding all spruce (top + slab cut back) cello made by Testrore. It was mentioned several times here on the forum, mainly by Manfio. Photos are welcomed as well! Thank you for whatever you can share! Dominik
  5. The upper label says: Restored by: V. Kulovaný (name) Pupil of M.Pikart (name) Luby u Chebu (city in the CR where violin making school is located, on the very far west of the republic) The other one in my opinion says: Libor Šefe (Šefl) - Luby u Chebu. Although it is hard for me to read it even though I am native speaker. EDIT: The name on the lower label is Libor Šefl, I am enclosing one of his celli in the link below. http://www.paganini.cz/violoncella/417-libor-sefl/
  6. Yes, I guess so. Unfortunately Manfio is not answering my messages thus I am seeking information elsewhere.
  7. A while ago I read here about Testore cello with quatered spruce top and slab cut spruce back. Does anyone have more information or better at least any photo of the instrument? I've heard it is still used by some sololist.
  8. May I ask why is that so? I have never heard of Jalovec being unreliable source.
  9. I agree with palousian that the violin is definitely not made by Eberle. The corners, arching, scroll, f holes are way too different from Eberle's work. I might post some photos of Jan Eberle's violins from the book "Czech violin makers" writen by Karel Jalovec if you wish so.
  10. I too would love to kindly ask Mark for a few photos of those surely interesting instruments!
  11. What I very much like about this cello is the flat back! Are there other cellos except this one, that has flat back? I know about one made by Jean Lambert, but it Is also rather odd shaped.
  12. Dear Maestronetters, reading the topic gave me this thought: How come do the 5 string violins play with it's "short" stop lenght/mensur? I do know that the dimensions of these instruments are sort of restricting the dark viola like sound but to my logic it seems that the problem could be, at least partially, solved by making the body a bit wider and the ribs higher. Couldn't this be the way of stringing the small violas? Keeping the stop lenght shorter and using violin C string? Sorry if I mix things up I just share what comes to my mind!
  13. It seems to me that it is just a piece of the soundpost wood (grain) chipped off.
  14. Dear jezzupe, thanks. Now I also do think that the probles is caused by not giving the varnish proper time to cure. It does not seem to be caused by the colourant as this would appear right after the first coat. I'll run some tests as others advice me and I will see. Also I will kepp updating this topic if needed. Thanky you all! Dominik
  15. Hahah, I see, that would be the easiest way to solve all these problems I have. Sorry for being so confusing - this is my first time varnishing and as you can see I am still not completely sure what I am doing!
  16. Well, let's check that! If I understand that clearly, to ensure that the blisters are produced by gases they should be empty inside, filled with air, am I right?
  17. Isn't there any risk of combining oil varnish and spirit thinne shellac?
  18. From your describtion it seems that the problem could be the matter of not giving the varnish enough time to dry. The bumps really are sort of blisters or something. Thank you for your advice.
  19. I meant with the brush applying another coat of varnish. Sorry for not being exact.
  20. Right - I have got this little update: I just varnished my viola. The steps were following: prepared surface, strong tea staining, gelatine applied. Then one coat of clear varnish. Once the varnish was dry I applied colourant on the back plate and put another coat of varnish. The result was nice, smooth and clear finish which I was satisfied with. Then I coloured the rest of the instrument and also gave it another coat over the colourant. This is still in the process of drying. But! Once I touched the already dry back plate (coloured and varnished) the sweating appeared! Absolutely confusing.... Dominik
  21. Dear Evan, thank you for you advices! These are my first instruments to varnish so...Long way to go I guess. I have no idea what is the composition of paints I am using, it would be better idea to buy high quality ones I would say. Well, next time I will know. Thanks
  22. Hi Fred, to cook the varnish I melted 180 grams of colophony, into wich I added 10 grams of calcium hydroxide (lime) dissolved in about 30ml of water. Once the lime mixed with the colophony completely I poured in 180 mililitres of linseed oil and cooked the mixture for about one hour (the instructions told me to cook it for 30 minutes only but that was not sufficient). After one hour the varnish got darker thicker and had a decent string. I thought that one hour is not enough but since it was my first time cooking varnish I decided to stick to the instructions. After the varnish cooled a bit I added about 100ml of turpentine to thicken the varnish. Regarding the colourant - it is oil based artists' paint I have no clue what are its ingredients. It is not stated on the tube. That leads me to the point where I think that this might be the problem...
  23. Yes that was Don's topic mentioned above. He had problems with thinner but it does not seem to by also my problem.
  24. No I did not as this was my first time cooking varnish and the instructions did not say so. I followed steps mentioned in this video: https://www.youtube.com/watch?v=gmHf5FHkh-c&t=18s . Yes I rubbed down the first coat on one of these instruments yet it was no help.