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Post by connrock on Feb 27, 2008 10:43:10 GMT -5
Boy am I ever having trouble cutting a bunch of wonderstone with mt 10" slab saw!!
I've tried 2 different used blades and still no luck.
I get about 85% of the way through the piece I'm cutting and the saw actually stalls out!
I even burned up an old washing machine motor trying to cut this stuff.I put a brand new 1/3 HP motor on 2 days ago and still no luck! Grrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr!!!
I checked the RPM's at the arbor shaft and it's turning at 1100 RPMs which I like.I could go faster but I really don't want to.
The blade in there right now is 10"x0.040" and has cut anything I put it up against until now.I reversed both blades ,,,,,no luck!!
I just ordered a new 10"x0.040 MK Diamond-Gemking Blade from Kingsleynorth and should have it in 4 or 5 days so we'll see how I make out with it.
I am so sick and tired of fixing and patching up this old saw but a new or even good used one is just too much for my budget!I payed $300.00 for this one used many years ago so you can venture a guess as to just how old it is!!!
I think the name plate is signed by Thomas Edison!!!! LOL
connrock
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Post by Michael John on Feb 27, 2008 11:21:18 GMT -5
You siad it "stalls out". The problem might not be your blades or your motors. It may be your clamp.
If your clamp does not hold the rock in exactly the same position throughout the cut, just a little movement will cause the blade to bind. Also, if your feed is not exactly straight, that can also cause a blade to bind. If the parts of your clamp that hold the rock are wood (especially soft wood such as pine or spruce), and they're starting to dry-out, splinter, or otherwise deteriorate, replace them. Don't use soft woods, and don't use oak ... get maple or walnut if possible, poplar if they're not available.
You definately want to make sure that your clamp and feed are good before tossing more money at blades and motors.
Good Luck!
Thomas Edison
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mike4bears
spending too much on rocks
Member since December 2007
Posts: 275
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Post by mike4bears on Feb 27, 2008 14:58:54 GMT -5
same thing happen to me. the rock vise was out of alinement. just do the pencil trick. put one in the vise and run it by the blade. you will see if it is ok. mike
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Sabre52
Cave Dweller 
Me and my gal, Rosie
Member since August 2005
Posts: 20,509
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Post by Sabre52 on Feb 27, 2008 17:07:59 GMT -5
Problem could certainly be blade alignment but many types of wonderstone are porous enough to suck the lubricant right out of the rock surface/blade surface interface thus causing the blade to run dry, overheat, and bind in the cut instead of having the coolant carry off the sludge like it's supposed to. Hickoryite is one of the stones I've had this happen with quite often and so is that Red Butte Jasper from Oregon. You might check to see if the blade/rock contact is gummy or dry when the blade binds up....Mel
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Post by MrP on Feb 27, 2008 21:23:37 GMT -5
Michaeljohn Why not oak?......MrP
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Post by catmandewe on Feb 27, 2008 21:55:56 GMT -5
Connrock, hang onto that one, those Thomas Edison signed editions are quite collectible!!
I am having the same problem with the mookaite I am cutting, it seems to absorb the oil or to change the oil into a globby mess. I added a couple extra gallons of oil to the saw so it throws more oil than normal and it seemed to work. Definitely going to have to change the oil after it gets finished cutting this though. My oil is starting to look like red/grey yogurt, suspended in a light oil.
MrP Oak is too hard, doesn't bite as well and cracks easily when pressure is applied. You want a wood that has some give, but the soft woods like pine will give too much and wear out very fast. A good medium softness wood is the best, I am using elm right now, because I have some of it that I sawed up into lumber, works pretty good but I am still playing around with it, to see which I think is best.
Thats my story and Im stickin to it..................Tony
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Post by Michael John on Feb 28, 2008 3:17:58 GMT -5
I specifically mentioned oak because of the nature of it's graining. It splinters easily. Once an area starts to splinter, the area will continue to splinter more rapidly. Oak is great with a good finish on it (such as marine varnish), but if the finish wears off and you don't tend to it, oak damages quite easily. Oak really hates water, too ... turns it black.
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Post by connrock on Feb 28, 2008 7:13:08 GMT -5
Thanks for the help guys! I doubt VERY much that it an alignment problem but I'll check that again today just to eliminate it from the equation.The reason I say this is that I just did an alignment and the second reason is that the saw won't even cut into a piece more then maybe 1-1/2"-2" before it quits feeding and stalls out. I'll also check to see if the rock itself is soaking up the oil and causing a bind/heat problem but I felt the blade to see if it was getting hot and it was just warm as usual.This is what baffles me.How the heck can this thing stall out without causing enough friction to make the blade get HOT??? I am VERY fortunate to have a terrific source for motors.My son owns a sheetmetal business and in many cases in new home installations the general contractor specifies a certain brand of motors he wants used on blowers,exhaust fans,attic exhaust fans,etc.Most units come with a motor and my son has to remove them and install the specified motors! Can you imagine this?  LOL These homes are being built for the "rich and famous" mostly in the Stamford CT area and nothing is too good for these people.It's nothing to see a home selling for $10,000,000.00-$15,000,000.00 down so what's the cost of a lousy motor? LOL As for types of wood.I do use pieces of wood on occasion to hold an odd shaped piece of rock but my vise itself is all steel with a piece of Masonite on the bottom which I change when it's needed. So,,,,,,,,all in all I'm kinda leaning toward the material itself as I've cut a lot of this material before but not this particular hunk so it just may be the culprit! Thanks again,,,,,, connrock . |
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Roger
fully equipped rock polisher
Member since August 2005
Posts: 1,775
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Post by Roger on Feb 28, 2008 13:22:07 GMT -5
My vote is worn blades,I had the same problem with my 18'' untill I purchased a new blade.I think the diamonds are uneven just before total wear-out.
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Post by Michael John on Feb 28, 2008 14:22:40 GMT -5
"the saw won't even cut into a piece more then maybe 1-1/2"-2" before it quits feeding and stalls out.
Ahhhh! If it's binding at that depth with EVERY stone, then chances are that it's either a worn or warped blade.
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Post by stonesthatrock on Feb 29, 2008 21:31:14 GMT -5
i will also go with worn out blades. Ours was doing the samething and we replaced all the parts only to find out it was JUST the blade grrrrrrrrrrrrrrrr
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Post by connrock on Mar 1, 2008 7:23:36 GMT -5
The worn blade was my first thought but one never knows!!! LOL
It doesn't hurt a single bit to through a subject out for opinions and most of all good answers as have been posted here.
connrock
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LOL
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