Hi, Byron. For what it's worth, I'll share my experience after having built two large MFTs, each of which had its own drawbacks.
ByronBlack said:
Basically it's going to be a simple pine constructed traditional style workbench base with a few drawers and single cabinet on the other side. [snip]
I would like for the top to be clear of the base by about 6" to allow room for clamps, and some general storage.
In regard to storage under an MFT, the second of the two was mounted about 8" above a bank of cabinets. I found that it was enough room for the clamps, but it was somewhat cumbersome to reach underneath. More space would have been better in that regard, but of course that would have reduced the size of the cabinets, given that I'd have wanted to keep the height of the table top the same. I also found that anything stored directly under the top will get coated with sawdust very quickly. Cleaning the sawdust from under the top is tedious, and the wider the table and narrower the clearance between the top and the base, the more cumbersome it will be to clean it. Finally, even though I had doors on the cabinets, I still would have dust fall inside them from time to time, which was a minor annoyance, but an annoyance nevertheless.
I'm going to be building my third large MFT in a few weeks, and that will have nothing stored underneath. I might make a provision for a removable shelf for temporary uses like storing panels while they're being glued, but that would be it.
ByronBlack said:
This is all well and dandy, but i'm having a tough time trying to work out how to actually mount the MFT top to this base.
ByronBlack said:
Basically, all I wish to do is remove the legs from my current MFT, and then mount it onto a heavier wooden constructed base, at the moment, the only way I can see to do it at the moment is to have a horizontal bearer running the from side to side across the long side with fixings going through the corner/leg brackets into the timber bearer.
For what it's worth, for my first large MFT, I made a frame from scrap 2 x 4 lumber, about 1200mm long, so there was about 400mm overhanging each end. The proportion was based on this idea:
http://www.sawmillcreek.org/showpost.php?p=123460&postcount=6
I ran horizontal bearers across the width, rather than the length, and bolted the 2m rails to the bearer by means of nuts inside the channels on the undersides of the rails. The pics below show a view of the table from the end and a view of a bearer, bolt and rail. Sorry that I can't get better pics, but I dismantled the table years ago.
I found that more support was needed, so in the second version I used four horizontal bearers, each of which had adjustable bolts to make the top as level as could be. The bolts were mounted into the top edge of the sides of the cabinets that formed the base. That is now dismantled, and unfortunately I have no pics, but I hope this description will at least give you some ideas.
Regards,
John