marcros":1vzq9ibn said:
Mess aside, what was the surface like using the router. I am building a sled at the moment for flattening my bench, and then a table top. It is about 50% complete at the moment and i am waiting on some bits to finish it.
What cutter did you use?
I was helping a friend do this: The stock was too thin really for its intended use (a Shaker-style rack of coat pegs), so we needed to flatten it (it was in wind a bit) but take off the absolute minimum of material. it was chocked on a router mat, so it couldn't move, and we got the optimum angle for the first surface. The other side was done flat on the mat (on the bench top).
I need to work on the technique a bit for next time, but it served:
Cutter: six-wing surface trim from Wealdens. I've had it a while and the finish is very good.
2x2 timbers either side of the board on the bench top,
Two pieces of 3/4" square steel tube spaced about 7" apart (clamped in frames of scrap timber outboard of the 2x2s) to make a sled sliding along on the 2x2s.
Router's steel fence bars running on the steel tubes so it could slide in the other axis too.
You don't want to attempt to slide often along the timbers - steel on steel is much smoother. The tubing was rough powder coated - with hindsight I'd sand it clean before starting as the router would've moved more smoothly.
A bit of cleanup sanding was necessary afterwards as there were slight scuff marks, but I put it down to sag in the supports (the board was about 15" wide oak, meaning the 2x2s had to be about 21" apart). We could have done it with my big Makita orbital, but my friend decided to farm it out to one of his suppliers who has a proper wide drum sander.
It probably needed less than 1mm overall. I haven't seen the finished result, but it looked really nice from the six-wing jobbie - didn't tear out and brought out the figure nicely (it wasn't quarter-sawn, but it was a bit gnarly).
I'd definitely do it again for awkwardly sized boards, but it takes a while to set up and do, and it's no substitute for a pass or two through a decent planer thicknesser.
Wealden cutters:
http://www.wealdentool.com/acatalog/Online_Catalogue_Surface_Trim_225.html
(Ouch! That's quite a lot more than when I bought mine!)
There are also these:
http://www.wealdentool.com/acatalog/Online_Catalogue_Surface_Trim__3_Wing_250.html
but they're only 3-wing and narrower, I think. I don't know what difference it might make.
I used the T11, incidentally, and the fine depth adjuster proved invaluable.
We started with an extractor pipe on the router, but it got in the way too much, so we ended up doing sections and hoovering in between.
E.
PS: We actually started with a #5 + cambered blade, taking off the high spots as an exercise, but got short of time, so resorted to the router. I don't regret it, as although sharp and back-bevelled a bit, the tearout was hard to control and frustrating. I had two irons on the go, honing one on the other bench while he was planing, but I couldn't keep up! (It wasn't fair really: he's new to woodwork and wanted to do it by hand, and I found a lot of difficulty with it myself).