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Home > Catalog > Installation Instructions > Drilling and Trimming

 

Suggestions for Trimming
Acrylic Windshields
and Windows

 
  1. Acrylic Windshields are tough - BUT THEY ARE NOT UNBREAKABLE - use care in handling and working

  2. A Band saw it the most common way to trim the edges of aircraft Windshields. Use a blade with at least 24 teeth per inch and a high speed - about the same speed as is used for wood.

DO NOT use reciprocating saws, such as saber saws!!!

  1. A high speed router may be used for trimming, however, a fixture guide or a very steady hand is required to use this method.

  1. To remove smaller amounts from the edge, generally 1/8 inch or less, a hand held disk sander may be used. A medium grit paper, and very light pressure on the disk sander produces good results. A belt sander may be used.

  2. Hand tools, such as files, hand saws, sandpaper may be used. Be careful, any binding of saws or files may cause breakage.

  3. Before installing the Windshield, carefully smooth the edges to remove notches. Acrylics are notch sensitive

  4. Any drilling must be done with drills that are especially sharpened for the purpose. See drawing

  1.  Installation should be done in accordance with aircraft manufacture
  2. s recommended procedure and/or normally accepted aircraft maintenance practice

NOTE: We do not recommend the use of covers on Windshields as they may cause crazing  See our FAQ page for more information

 

This shows the proper way to sharpen a drill with slow spiral polished flutes

This file as PDF: 14.6KB


 

For more detailed information you may also visit on-line:

NOTE: Due to a restructuring of the FAA's web site, the file is also posted on our web site for easy access:

AC 43.13 1B Chapter 3

Local Site: 762 KB
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