More Stable Dust Collection Boot for CNC Routers

Another magnetic dust boot attachment.  This one lives at TechShop Detroit.  .dxf works well with the following materials and is included at the end of the instructable.

Materials:
3/4 MDF * 
1/2 MDF *
24" Tight-Seal Strip Brushes McMaster item# 74405T14 for 3" steel backing (other sizes available in the same section)
1/2" Neodymium Magnets (available on amazon or ebay) *
1/4 - 20 hardware 
hot glue

* substitute with what you have around the shop.  Make adjustments to .dxf as necessary.