FWIW, the impeller design is almost a duplicate of the DC3300. The built in vacuum has been criticized as well, but Shopvac was not around when the Mark VII was being made. It had two major design flaws - Both were plastic! The speed control cam and the gear rack. IMHO more accurately, later ss designs have caught up. It has been said that it was 'ahead of it's time'. That said, there were many design details that have been incorporated into the Mark V and the Mark 7. I am sure I have probably left out something, but ya git the idear(tis a different animal). Major differences are the dual shafted motor with a vacuum(7 th function), the dual tilt function(under table routing 6 th function), an entirely different base design and not the least is the speed control redesign(still a reeves drive, but different control sheave moving mechanism), a larger main table that could be made wider by inserting the extension table into mounting holes in the side(the extension table had two 'top' surfaces at 90 degrees from each other), a headstock/carriage lock(allows moving the headstock and table simultaneously), a crank that moved the headstock(and carriage if interlocked) by means of a gear rack on the back(inside) of the 'front' way tube, a shaper fence that bolts directly to holes in the main table. It is significantly different from the previous Mark 5, but does share many common parts. 1960 Mark VII (7-in-1 tool) Included a spindle shaper dust. They had exposed belts and were put on hand made benches. 1947 to 1953 10E (Experimental) and 10ER (Experimental Revised) These Machines were distributed to Montgomery Wards and many are still in use today. The Mark VII was manufactured by Magna American Inc. Note: These Units Were NOT Manufactured By Shopsmith, Inc nor RLFShop LLC. A Mark VII is NOT a Mark 5 nor a Mark V anything, nor has it any relationship with the current Mark 7.
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