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Monday, March 29, 2010

Make your own rosin

The resin is extracted from the living tree, a process that does the tree no harm. Resin is not the tree´s "life-sap" - it serves only to seal off wounds. The wood also suffers no technical damage, as the "resined" area behind the area where the bark has been peeled off is restricted to a few millimetres. When the trunks are cut in order to tap the resin, these "rosined" pieces fall into the cut edges of the bark.

1) The first step in obtaining the resin is to remove the rough outer bark of trees which are to be tapped for the first time at a height of approximately 50 cm, at the beginning of the warmer season.

2) Use a special stirrup-shaped tool for scraping off the bark and making the drip channel

3) In the second step of the process, V-shaped grooves about 1 cm wide are cut into the thin inner layer of bark remaining after the first stage, using a plane. As a result of "wounding" the tree in this way, the resin begins to flow into the container hung under the cuts. The tree must be cut into again every 4-5 days.

4) Use a special tool for making the grooves cut in the surface of the trunk (plane, right side of tool) and for cleaning out the drip channel (left side)

Finishing:

When you have composed your ideal formula, mix it up and put it in a large vat, over the fire. After the resins are completely melted, pour the hot, liquid rosin into moulds placed on marmore. After 30 minutes, your rosins are ready for finishing - but here is a problem you didn't expect. The top surface has now got a hollow that will prevent the bow hair from collecting rosin properly during the first two months of use. To correct this, reverse the rosin after it is cool and completely hardened. Then you will have the ideal, flat surface. Now, polish this surface and put your stamp on it, confirming that it has been made personally by your self. Now afix the rosin to a soft cloth to protect your fingers.

1 comments:

Nathan said...

Thank you Lexi,

I am hoping to make my own pochette and I wanted to be able to make most of my supplies too so your little guide on making rosin will be very useful to me.
I enjoyed the music on your site too!

Thanks again
Nathan


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