Not sure how to post photos but here are some links.
https://www.instagram.com/p/CfRpoe4JoNk/?igshid=YmMyMTA2M2Y=It is thanks to Timo for helping me out. He gently pushed me over the edge to just do it.
I’m using a mirror from a cheap Newton Telescope I bought locally from Facebook Marketplace.
For a lens I am currently using a 7 Artisans 35mm f/0.95 I thought I would need a faster lens for more light gathering. It definitely helps when filming at 32,668 frames per second.
I used a small Surefire handheld light with a fiber optic adapter on the end. The fiber optic wire ended up being too dim for higher frame rates so I just removed it. Plenty of light now. At first I did not use a razor blade but now I do. It helps improves the sensitivity of the Schlieren but it does reduce light into the camera.
I’m still experimenting. Have not gotten crisp images yet.