Search the Community
Showing results for tags 'problem'.
-
Large Volume of 5% Butvar Solution - rushed mixing process = congealed clumps
fossilstacey posted a topic in Fossil Preparation
Hi Fossil Forum, I joined this forum for help with an issue that is baffling me, I have used butvar for many years. I make multiple liters at a time and usually slowly mix the butvar in over the course of 24-72 hours to prevent clumping. This is a standard 5% solution, 50g to 1000mL. I was in a rush, and I basically dumped all the powder into the solvent at once. After a couple days and stirring often, the solution seemed stable and the clumps were gone. We then filtered it into smaller bottles then, after a few days the resin congealed, almost to like a jello looking consistency in some of the bottles. I realize I should have stuck to the original method, but I am trying to rule out other possible reasons for this reaction. Has anyone else had a similar outcome of mixing butvar too fast, I realize many of you only mix small amounts at a time.- 5 replies
-
- butvar b90
- butvar
-
(and 1 more)
Tagged with:
-
Hi guys, I have an id problem with this fossil (pic attached). I do not know the period and the provenance. perhaps from China. can you help me? Thank you!! Paololitico
- 11 replies