Sorry about the pictures there is no flash on my phone and the glass was transparent.
Your going to need
a razor both the double pointed (like in a box or dry wall cutter) and the straight edge both with holders
flat head screw drivers
soap & water
small pliers (needle nose work goodgreen scrubby
Step 1: Select the window
Things to look for
no cracks in glass
no silicone holding window in
Step 2: Carefully remove the putty
The two things that you need to look for are
- Glazer points
- small bumps of putty stuck to the wood
Cut down. Take your time make several passes don't rush don't push against the glass. Make sure their are no bumps of putty that will hold in the glass. There should be a knife thick grove between the window and the wood. Watch out for points dulling the razor.
When i have broken the pains it was because of these bumps or hidden points.