Originally Posted by boywonder
...for folks wondering about the "orbital" in jig saws.........
I have an older Bosch jig saw with three settings.....
So, something to consider when buying a jig saw.
Also own an older Bosch----bought in 1990 or so, still
one of the most amazing tools I've ever
owned, bar none.
The orbital feature simply has the blade moving up and down which is normal but also advances the blade into the cut each stroke---the blade path describing an eccentric. In the metal cutting mode the smallest setting is preferred. When used for wood or other softer materials the larger orbital setting makes for fast work.
The idea these windows are called "universal" is they're not made specifically for any one van body. Sizes are determined by how much body side material you want to remove for their installation.
Yes most of them are flat but because the van body side is only curved slightly there isn't much of an issue with that being a huge issue. I will say trying install such parts by bonding with windshield urethane can be an issue though---the inner ring "clamp" pretty much over coming this minor fitment feature.
Bee you need to use a metal yardstick (or something similar) as a way to gauge by eye your body curvature and compare that with the window frame. I would assume you'll find there's only 1/4" total variation which the inner ring will compensate just fine.
I would advise a bead of exterior grade silicone sealer/adhesive between the window's mounting flange and the van body. Even if a foam seal in applied to the window frame the silicone is still advised. I've seen too many of those foam seals fail causing leaks that can go undetected for a long long time.