Somehow my Z-axis screws got out of sync on my Ender-3 S1. The gantry was higher at one side than the other.

I needed something that would precisely measure the distance from the frame base to the gantry, so I made these. They should be useful for any printer with dual Z axis lead screws.

I printed these on another printer (2 at the same time) to be sure they were the same height. They are designed to be 100 mm tall, and to be placed on the frame base next to the bed as seen in the photo.

I raised the Z axis above the block height and shut the printer off. I then placed the blocks as shown in the photo, loosened the set screws on the top pulley for one of the screws, then manually turned the screws until the gantry was resting on both blocks. Then I tightened the set screws, raised the gantry, removed the blocks, and re-trammed the bed.

I don't require payment for my designs, but if you find this useful, I'd appreciate it if you would buy me a coffee.
My Venmo ID is @Techineer. Thanks!