I have found a good way to correct the angle on the edges of the lasered parts supplied in  the AVS, Conny, Rattlesnake kits....(or any other lasered parts). I set up a Shaper Table (sold by Micro Mark #60485) and one of my Dremel Rotary tools.....

Put a 1/4" diameter drum sander in the 1/8" collet.

Took off the guard by pushing the pivot pin from left to right, facing the shaper....

Removed the fence to clear the table surface...

Checked the drum sander with a precision square to insure sanding a square edge....

Front to back and side to side.

*note ( There are two mounting screws accessible on the top  of the shaper table that hold the rotary tool mount to the underside of the table. If the drum sander is not square to the table, you can put some shims in to correct this).

This method works very well, but there are a few important points of info.

  1.Safety Goggles!

  2.A mask over the mouth and nose, due to the dust and oils being removed from the lasered edges.

  3.A vacuum running will help.

  4.Since the drum is turning counter clock wise (looking down on the drum) it is very advisable to only sand from left to right...sanding from right  to left will cause the drum to dig into the edge,  no matter how light a touch you have....

  5.A high speed is recommended because that divides and decreases the cutting rate....

  6.I put the work behind the drum so I could see the removal as it happened...

  7.This method will work on all lasered edges, inside and out, on straight edges and curves.

  8.Practice on the scrap that is available after you remove the bulkheads, parts from the supplied sheets.

  9.It does not matter which side you put down on the table, because the high side of the angle will be removed as you square up the edge.

10.The ideal condition is reached when you see a square edge and only a little ghosting of the original surface to maintain the shape...
Regards,

Jerry G (Glickstein)

Correcting the angle on the edges of the lasered parts