Ordered some custom pieces to improve the airflow on my corsair 280x pc case. Everything arrived quickly and they work perfectly. I did have to drill out the inner openings of the washer bits, but i literally just had to shave >mm off. I assume this is either an issue with the blueprint I provided, or due to my request for max infill. Definitely not the printer's fault, and it was a very simple adjustment to make. Will definitely be returning for future case modifications as the need arises. Thanks!