I just finished building a new workbench - an exact copy of the joiner's bench from Sam Allen's workbench book. I knew going in that the bench wasn't going to be the crown jewel of benches. I went for utility and economy. I built the top out of 3 laminated layers of 3/4" MDF and a top skin of 1/4" masonite. The base is just douglas fir 4x4's and 2x4's, held together with truss rods. It's very rigid and sturdy - just not very heavy. I spent my money on a couple of good vises - a Record 52 1/2 front vise and a Vertias twin-screw end vise. (I still have to install the twin-screw vise, actually).
Anyway, I calculated the weight of the bench to be about 215 lbs. I compared this on paper to what I would have had if I made the whole thing out of hard maple with a 2.75" thick top and a hard maple base and I came up with about 250 lbs. So, even though I'm not using primo materials, the weight difference doesn't appear to be as drastic as I thought.
My problem is that I when took my bench for a test drive I had some problems. I have a big slab of hard maple that is going to become the vise faces for the Veritas vise, as well as the Record vise. It is 2.75" x 8" x
60". I clamped it in the front vise on one edge, and used bench dogs and a hold down in my board jack holes to hold it securely along the front edge of the bench. I then took my Clifton #6 and set it for a pretty thin cut and started planing one edge. Things went pretty good, but I clearly need to practice my planing technique. Then I started to get some catches. I would be applying a lot of lateral force and then hit a snag or something and the whole bench would move. I should say, I'm a pretty big guy and so I can get a lot of momentum (which I always thought was a good thing when hand planing). At any rate, having the whole bench chatter across the floor was not a good thing. I tried adjusting the plane and couldn't get it much better. I then used my Steve Knight razee jack plane, and the Steve Knight smoother and had similar things happen.
So, I guess my question is can this problem (i.e. getting "snags") be eliminated if I just knew better how to adjust my planes? Is it something to do with my technique that is causing these problems? Is hard maple not a good first choice to practice hand planing with?
I will say that the bench is going to be a wonderful tool. It sure beats the hell out of the workmate that I had used in the past hehe. I just hate finishing (well, almost) a project and then finding out I need to upgrade it right off the bat.
Mike