About this 3D model

Of course, right after receiving my X1C, I printed the Bamboo scraper. It works fine and does what it's supposed to. However, I find the price for the replacement blades at 4.99 euros for 3 pieces a bit excessive. So, I designed a blade holder that can accommodate cheap trapezoid blades (100 pieces for 9.99 euros). The model consists of 2 parts, the actual holder, and a cover. Both parts have two holes with a 3mm thread and can be screwed together with M3x4 screws (from below) OR M3x8 (from above). The parts can be printed without support. cheap Blades can u get here: https://www.amazon.de/dp/B015W3AKDQ?ref=ppx_yo2ov_dt_b_product_details&th=1