High Accuracy Moulding?

With my wood master I can cut several hundred linear feet without any change to the molding. The only time I have some trouble is on really small moldings(1 and 3/16” wide), makeing panel molding the last few inches of the board have a hard time and need to be pulled(lack of surface for the rollers to grab).

I have a three blade molder head that attaches to my Shopsmith in saw mode. Using the fence as a guide, and with both side and top featherboards to hold the stock in place, the cut is going to be as accurate as the straight edge contacting the fence. I’ve never measured, but an accuracy of even better than 1 mm should be possible. Check out Nick Engler’s short presentation on using the molder head;

http://www.shopsmithacademy.com/SS_Archives/SS115/SS115_Molder.htm

-- "Heaven is North of the Bridge"

A few quick measurements off of my recent shaper run (3/32” grooves) indicates that from pc #1 to pc #128 there is only .003-.005 difference on average. I would expect that the variance is more due to the material than the machine

I would expect as good or better from a dedicated moulder

-- The only easy wood project is a fire

A good molding machine is an extremely heavy duty machine. I have a Belsaw planer/moulder that uses single knives with counterweights to balance the head. I would think with good rigging and guiding that 1mm tolerance should be easy.

Thanks All!

I’d like to try a table saw molder cutter head, but I need at least 1.25in cutting width. All the heads I find seem to use 1in or less knives (though knife width seems to be some kind of secret). Given that I’m going with custom ground knives, can I get my 1.25 width? Would this be acceptable in the head? I’m only milling 0.25in depth V-grooves in Hardwood (need single pass solution). Thanks.