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How to sand edges of very very fine slits...?


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This is a rare but really nasty issue.

 

You tried your finest jeweller file and...it is too thick! Then you tried using a sandpaper strip but it is too flimsy! Consequently, you glued the sanpaper on plastic strip but this is again too thick... Then you tried to scratch the plastic edges with the end of a scalpel blade but it is very difficult to obtain a smooth result...

 

Grrrrrr...

 

Here is the solution: photoetched parts!

 

Yes, really!

 

Just try to find a left-over photoetched fret and cut a 2 to 5 millimeters wide (depending on the slit width in which you must sand) and more or less 5 cm long section. As some frets are thicker than others, you also have the choice. Use your Dremel/Proxon tool to clean the section sides (remove parts fixing points). Then use a strong cutter blade and make diagonal cuts on one end of the metal strip. Turn the strip and do it again to obtain a crossed pattern. Obviously, this is only possible with brass or copper photoetched parts, do not try this with chrome nickel ones!

 

Bingo, you've a micro-file!

 

This demonstrates again that modellers should never throw anything to the bin even if their wife generally disagree with the principle:-)

 

HTH

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