Hi

I am building my first mill (40mm series extrusion frame) and I would like to skip building a huge and expensive box around it. How to protect myself from the bits breaking and flying like shrapnels of a grenade without an enclosure?

I would like something around the bit (a polycarbonate cylinder?), obviously not perfectly to not to collide with the stock but maybe something adjustable in Z direction..with some kind of a front wall to catch up the stuff that shoots out in low angles. The cylinder could also be part of vacuum system. I will machine mostly aluminium and was considering a combined air blasting and vacuum to remove the chips and cool the bit.

Does somebody sell something like that? Have you maube built something like that?

Everything relevant interests, creative DIY stuff and off the shelf products.

Thanks!