I will be getting a 6 head moulder soon. I will make thousands of 1/4" and 3/8" thick battens 7/8" thick 8' long, mostly from red oak. Can I gang rip the blanks on my moulder? What tooling do I need? I want to use the narrowest blades possible to minimize waste and maximize the moulder's 15 hp. I will then set up the moulder to clean up saw marks and ease two corners. How much oversize will the blanks need to be?
(Solid Wood Machining Forum)
From Dave Rankin, forum technical advisor:
You can rip on a moulder, but you are required to have an anti-kickback device on the machine. I suggest that you use a customized pressure shoe to help control the work pieces.
With 7/8" thick material, you should be able to use 3 or 4 blades.
The kerf (width) of the saw will depend on the type of material that you are using. If you are running basswood, you can use a thinner blade than with maple.
Oversize of the wood will include the total kerfs of the blades, plus at least 1/32". I normally use 1/8" to 1/4" over, depending on the material condition. Is it straight, bowed, twisted, etc? These will also be factors to consider.
If you will reprocess the wood as I believe you will, then add at least 1/32" to the thickness. This will allow you the minimum cut that will not burn up the tools. You may want to add a little extra to assure a clean cut.
Resin board never wears out. I don't remember where we got it. Phenolic resin board? Don't remember the exact name.