How to build a "Flexi-Perch" Squirrel-proof birdfeeder for $10 or less

Step 5 Fit and mark the base plate

Trim and/or sand the block until it fits snugly into the bottom of the pipe. The block will act as the base plate of the feeder. The pipe will have 4 lines evenly spaced around its circumference. Mark the base plate at each of these lines and, for one of them, use a special distinct mark on both the base plate and the pipe so that the base plate can be easily lined up in the correct orientation. Use a straightedge to mark the center of the base plate.