So, after watching YouTube videos, I made a jig for cutting straight edges with a fixed circular saw fence and a plywood cross board that is 3/4 inch above baseboard. When I slide a 1×4 along bottom, it slides in smooth. At the top though, very tight. Sticks . Any ideas to fix this. Put shims in the topside? Buy some new hardwood boards?
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You’re probably gonna have to post pics for a clearer understanding.
The image is a good idea. What I made is atached. I think its a cross cut jig. The Youtube videos all made it look easy peasy. Attach this, attach that, and "Wa la!" The boards all slide through the middle perfectly and you get straight cuts! Nope. My board gets stuck on the right/top side. When I raise the right side to be higher with shims, the cut feels a little lop sided because the shim raise was not perfectly level. Anyway, let me know if you have any suggestions.
Your saw’s cross-cut guide's base appears to be ¾” plywood, which can bow or flex. I would clamp a level to one edge (this is to ensure the base remain flat and not bowed) and add a spine glued and screwed to one side of the base to stiffen the sled.