7 1/2 saw blade for demolition?

This won’t, I hope, turn into a verboten medical discussion.

I have to rip a long line through a century of old flooring - the bottom is lovely old-growth spruce and douglas fir, about 3/4 in. each, with another half inch of rotting particle board and many nasty layers of tile. (Lino tile, not ceramic, although I’m hoping none of its asbestos, btw.) Anyway, I calculate that I can set the Makita to a depth where I’ll cut to within about 1/2 - 1/4 inch of the joists. My usual circular saw trick where there’s nails involved is to flip the blade and then go slow. This is longer than I’d usually do that with, and messier. What’s the right blade for complete slop?

You should definitely consult a physician
before cutting your fingers off.

Ah well, maybe it’ll make me a better musician…

Mr Google says a cheapish carbide blade + goggles is the way to go. Anyone want to object?

Are you just going to hope that it’s not asbestos? Aren’t the odds fairly good asbestos was used at some time in a house that is 100 years old? At least wear a respirator and use a hepa filter vac, mine hooks right on to my Bosch, but I can’t loan it out right now.

Ohh! I see nothing! I know nothing!

http://www.youtube.com/watch?v=34ag4nkSh7Q

Fingers successfully untruncated. I’m being a bit flippant about the asbestos. Actaully, I have a very good idea what’s been used in the floor. One layer of tile looks a bit brittle, and it’s of the right era . However, it is sandwiched between a layer of particleboard and two layers of lino. The brittleness doesn’t mean that it’s crumbling, by the way. It just means it’s not oil based linoleum. After I discovered it, I managed to lift the layer with this tile out of the way pretty much intact, still mostly sandwiched. There’s some I drilled and sawed through before I found it, and it’s possible some got in the air then, but very little. I’ll get masks for tomorrow.

I find masks a good idea anyway. I do very little these days that involves sawdust without a particle mask on.

I love that old lumber. They just don’t grow it that way any more. Literally. Around 20 years ago, a friend discovered some heart pine, I don’t remember how. This stuff was so cool; you could light it with a match, almost burn it like a candle, use it like paraffin blocks as fire starter. The stuff we got was in pretty small pieces, so there wasn’t much else we could do with it.

One thing about living where a rain forest used to be, a little more than a century ago, is that there’s lots of lovely timber in the rarish number of buildings of this age. This tiny corner of east Vancouver was one of the three or so spots that survived the great fire of 1886. Fires being the other thing you’re likely to find if you’re stupid enough to try and clear the remaining bits of rainforest in your burgeoning town by burning, after the old growth has been felled.

Anyway, this is a heritage building, despite the fact that it’s a row of two storey, working-class ‘traincar’ flats, exactly like about 60% of Montreal. However, the douglas fir wainscotting is lovely, although I’m a little shy of lead to try and strip the paint*, and once I spent a very unpleasant three days on my knees lifting lino, I had old growth fir flooring from end to end. Except for a small part outside my bathroom door, where someone in the past went through the floor for something and patched it with plywood. I volunteered to do the demolition downstairs because I suspected - correctly - that I can harvest far more perfectly-matched flooring than I’d ever need to repair my floor. A couple of weeks ago I had plumbers go through my bathroom wall, which would have pissed me off a lot more, except that three years ago when I joined the kitchen and living room, I salvaged all the wainscotting apart from the two I had to cut, so I’ve been able to make an invisible repair and top it with a length of salvaged chair rail that’s also a perfect match. Sadly, all the good vintage trim was ripped out downstairs long ago and replaced with shite.

A year ago I had a friend stay in my spare room for a month, after he moved out here to take his first job after law school. My best friend (not the same person) lives below me (next door to where I’m working). Having a young gay yuppie’s sense of real estate, after a couple of weeks of apartment hunting, Peter asked me out of the blue, “how come your place has so much charm, and Lori’s has no charm at all?” Both the spaces below have been storefronts from time to time, and at some point both got gutted to make a big white box, but badly. Lori and her husband like a more industrial space, and love the high, high ceilings (there’s still four feet above them to the joists of my floor) so it suits them. Peter wasn’t impressed. Wow, that’s lot of typing for not much point. Oh well. I guess I’m in a rambling mood this evening. The world lost a fabulous fag when I grew up liking girls, I think. (I can sew, too, as well as decorate, although I mostly don’t). OTOH, mine was the AIDS generation, or rather I’m about 1/3 of a generation behind the first AIDS cohort. Being straight likely saved my life.

*If I did decide to go for it, I’d lift the chair rail, pop off the wainscotting, turn it over, plane the back smooth, and reinstall them rather than trying to strip the layers of old paint.

Simon, let me say the obvious that dogs and cats are nice, and household flooring, bathroom walls and wainscotting are also interesting, but what you need is a woman. Then you wouldn’t have the time, energy, or money to worry about the other things just mentioned.

Speaking of lead paint, we have used Franmar Soy Gel Stripper on all the wood in our home which was painted with lead paints. It’s pretty incredible stuff. Our locality takes all the stripper residue and the asbestos insulation I removed through their HazMat program.

BTW Doug Tipple didn’t mention HDLs so just getting a girl doesn’t mean the end of renovation and restoration, it could be the beginning of a whole new level…

A carbide blade is the only thing that will survive for any period of time. If you move slowly, with respirator, safety glasses and hearing protection, the carbide blade should have no problems. The same carbide is used to cut steel, and if you move slowly, the feed rate into the teeth shouldn’t exceed what the carbide can handle. Just remember to toss (figuratively :open_mouth: ) the blade when the job is done. Carbide doesn’t handle ceramics well (really, only diamond does), so if there is any ceramic tile, work around it.

dave boling

Thank you. That’s exactly the info I was looking for.