amurray Posted August 18, 2015 Share Posted August 18, 2015 (edited) I am trying to sand the halves of two resin wingtip tanks. The four pieces came attached to resin pour blocks. I sawed off the resin pour blocks resulting in a rough surface. I then taped sandpaper to my glass work surface and sanded each of the four pieces, sanding each while holding it upright. The goal was to have a flat surface on each respective half to mate to its corresponding half. I was relatively successful with one tank (2 halves). The other though is slightly higher in the center than on the edges and one edge is lower than the edge on the opposite side of the tank. I can't get them right. I am evidently exerting some subtle extra pressure in some places than others or am holding the pieces at an imperceptible (to me) angle with the result being mating surfaces that are not flush. How does one produce flush (flat) surfaces in such cases? Thanks, Art Edited August 18, 2015 by amurray Link to comment Share on other sites More sharing options...
D.B. Andrus Posted August 18, 2015 Share Posted August 18, 2015 Art Have you tried sanding in a figure 8 motion? I use right, then left hand to balance out inherent pressure bias. HTH, D.B. Mal_Belford, Derek B, Vandy 1 VX 4 and 1 other 4 Link to comment Share on other sites More sharing options...
amurray Posted August 18, 2015 Author Share Posted August 18, 2015 I've tried circular motions but not figure 8's. I'll try that. Thanks. Link to comment Share on other sites More sharing options...
Mal_Belford Posted August 18, 2015 Share Posted August 18, 2015 Yep as Andrus pointed out...8 motion does the trick...... Cirkular motion get same preassuere all over and it make is uneven.....so go 8 motion.....a tip on the way....do Little by Little to see where it gors....loses material so you can move preassure where needed, and yes, use wet paper and water...that will do the trick.....and yes better less material loss than alot at once so take it easy at yes takes time...dont forget...time is modellers best friend...as in fact it is modellers best friend patience....it will Always pay off.....trust me on this one.... /Mal Zero77, D.B. Andrus and Derek B 3 Link to comment Share on other sites More sharing options...
moldmkr78 Posted September 1, 2015 Share Posted September 1, 2015 Another trick that I use is to darken the surfaces to be sanded with a pencil so you can actually see where the material is being removed. it gives you a nice visual as to where you are applying too much pressure. Link to comment Share on other sites More sharing options...
DoogsATX Posted September 1, 2015 Share Posted September 1, 2015 Try sticking a razor blade into an xacto handle: D.B. Andrus, Wurzacher, Zero77 and 1 other 4 Link to comment Share on other sites More sharing options...
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