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Big old tools and modeling

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Tools · Nov 12, 2004 09:28 AM

#0 source
Don't know if this stuff has any real use here, but decided to move it to it's own thread just in case. Big old tools aren't for everyone, but space should be the only reason they aren't. Generally speaking, they are cheaper, better made and run more efficiently than newer, smaller counterparts. Even if you don't have space for them, there's much to be learned from them to help other machines and tools work better. Mainstream tool availability has dumbed some of them down to the point of utter uselessness, handplanes being a good example. Fact is, practically ALL tools (especially new ones, even $1000 Delta Unisaws) are "kits", and just like ARFs, if you really want them to run correctly, they need "tuned".

Isky wrote:

>Let us know when you get it running! And take some pictures,
>too! I wondered about the 1/8" blades because I'd think
>something of that size probably takes 6 inch wide ones.. and
>one wonders if you can actually adjust the blade guides down
>for something that narrow!
>

Sure will. While you wouldn't think it at first inspection, this saw is really no different than a small hobbyist saw except that it's got very large wheels. Won't even accept a blade wider than about 1", and is most comfortable and useful with regular 1/4" to 3/4" blades. While the height under the blade guide is useful, the throat size is more useful. Saws designed for resawing don't have wheels all that large in diameter relative to throat size, and have really wide wheels. The wheel size is more a function of how tightly you can turn the blade around without messing it up. It gets really hard to tension wide blades correctly.

A tidbit of information useful to modelers is the fact than a NARROWER blade will resaw more effectively on small saws since they can be adequately tensioned (if you can get it with few enough teeth/in). Simple matter of realizing that tension is force/sq something, so the smaller the sq something, the higher the tension. Also, no matter how you're cutting wood, about 3 to 4 teeth in the cut is a good rule of thumb. So, when you're resawing, the FEWER the tooth count, the smoother the cut. That's a function of the blades ability to get rid of the sawdust as it's cutting. If it piles up in the gullet (space between teeth), it creates friction, heats up the blade (may draw the temper and QUICKLY dull it, compounding the problem) which then makes it longer and reduces tension, the blade starts to wander.

Another neat thing about this big old saw is that with wheels that large, they really don't turn very fast to get the requisite cutting speed, SO, it's REALLY quiet and vibration free while running. Actually makes is much less intimidating to use.

I've got a Taiwanese made Delta small benchtop belt/disc sander. Sounds like it's going to explode any second, and really has no power. THEREFORE, I'm going to buy a 1920s patternmaker's floor model belt sander tomorrow. It's drive wheel is about 15 to 20" in diameter and weighs about 700#. The belts are probably about 10' long. Again, you pay for them by the inch and are easy to get made to custom lengths, so they're less expensive than standard belts anyway. You can even mount sanding belts on bandsaws effectively. The lack of a platen makes sanding curves very easy. If you need a platen, just C clamp one to the bandsaw table.

Tools

Mike

captcurt · Nov 12, 2004 09:53 AM

#1 source
Reminds me of the BIG re-sawing set-up we had at one of the old boat shops I worked in. It was a 48" Tannewitz. Was running with a 4" blade and probably a 40HP motor--direct drive to the lower wheel.

THe blade took a small hoist to put into position.

Should have seen it the day the blade came off while free running!

Most of us just ran the other way as fast as we could!

We used to resaw 24" square timber into 8/4 boards for planing.

The good old days---square jointer heads, iron ships, and wooden men!

Curt

Proparc · Nov 12, 2004 10:55 AM

#2 source
Tools definitely has a place here and IMHO, doesn't get enough play. Without my Sears Craftsman 160 lb cast iron bandsaw, I am literally out of business. It has to be "tuned up" before each building session because of the high accuracy nature of stunt building. All of my power tools require tune up from time to time. I rather enjoy it frankly. I guess that is an admission of not much of a social life, but I don't care!!

"I don't know about this tuned pipe business. I practiced on that thing until my lips turned blue, and I still can't play a stinkin note."
"Homer J. Simpson"

Milton Graham\Proparc