Here is one that had no perl on the underslide. I'll try to fake which only takes a few minutes. Here are the steps

• Scrape any old glue off the slide
• Put the slide on a piece of Cellophane
• Cover the working surface of the underslide with a thick layer CA glue
• Scrape various colors of chalk on top of the CA glue.
• Mix up a little with the tip of a knife
• Fold the cellophane over and clamp the slide glue mixture in a vise.
• After it's dry remove from the vise, it should be pretty flat and straight.
• File the edges to match the underslide and file the top of the slide flat.
  
• If the underslide slides under the back heal, remove the excess.
• The easiest way to do this is have a straight edge on a thin strip of wood. Align it so you file off the excess.
• Do the same for the part of the underslide that goes under the ring.

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Sometimes bow slides are missing a little chunk of mother of perl. If it's a nece bow you just need to fit a new slide. For other bows a temporary fix is filling the missing piece. Usually I do that when Im rehairing a bow.

Here are the basic steps.

• Remove the slide
• Lay the slide on a flat level surface
• Put a little bit of CA glue on the missing area of the slide.
• Using sidewalk chalk scrape the various colors onto the wet glue
• Mix it up a little using the tip of your knife.
• Wrap it in cellophane and clamp in a vice.
• After it's dry,, flatten out with a file

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Here is a bow that came back for a rehair, I realized I fixed the slide a while back.

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Another one. Oops, made this one with too much speckels.

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One more. Oddley this slide seemed to fit better swaped around.

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