I'm planning on making a planner stand with the plans at http://plansnow.com/plnrstnd.html. The plans call for 3/4" plywood and I inadvertently bought what I think is 3/4" mdf with a birch plywood veneer. I'm concerned about the stuff I bought because the plans call for several dado cuts. Should I just go buy some plywood, or is the mdf ok? Thanks in advance.
I would not use MDF for a planter stand because it does not react well with water that will most likely be spilled. I would use at the minimnm, extertior grade plywood with a exterior finish such as spar varnish. Teak, cypress or redwood would be my choices of materail.
You can dado MDF but it wonít take screws well. There are specialty screws you may want to try. I donít have the plans so Iím not sure but you may be able to modify the plans and use cleats. IMHO, glue alone wonít hold up to planing. If it were me Iíd use Plywood.
Trust me, you're not out $34 and you will be glad you have the stuff. It will come in handy time and time again for various projects, I use leftover/scrap MDF every day it seems. You will undoubtedly find use for it!
Note: the first two pictures, top to bottom, show the sample woods I bought to match: mahogany, walnut, oak, the bottom is the side of the table. The remaining 3 pictures are of the wood in question...