Dust extraction flexible segment

The print raises a small ring burr on the inside of the bottom of the segment. I suggest it is left rather than filed or sanded as it makes for a tighter fit. I have de-burred a couple of segments and they ended up being very loose. I have included the autodesk file so that you can modify to suit your needs.

I made these 68mm for use with UK downpipe of that dimension.

These are a tight fit when they first come off the printer but they do go together with a bit of manipulation.