Hi all, as guitar builders we do a lot of sanding so thought people may find this product useful. I've just purchased these from Axminster tools as a great price, you just need to make a box for them (measure the trays for the box as some say the plans are a few mm out) they come with a 4" extraction port so fits my dust collection. I found this works better than my home made ply down draft table. Hope this is helpful

Here's the link

https://www.axminstertools.com/axminster-downdraft-table-kit-508319