JR8675309
freely admits to licking rocks
Member since August 2019
Posts: 807
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Post by JR8675309 on Sept 3, 2019 8:05:28 GMT -5
Three weeks ago I purchased an 8” H.O.P. E. Saw on Craigslist. It is a cleaver step aww from what I understand. I’ve never had my own rock saw and this should be fun.
I cleaned out the reservoir last night and I really hope the pump functions. Last night I added new tubing where it was missing. I read a very good artivle/PDF on the forum about saws in general (what’s a kerf etc). What advice do you have for me before I fire it up tonight? Thanks in advance!
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Post by hummingbirdstones2 on Sept 3, 2019 19:57:43 GMT -5
Hit the switch and duck! If no loud noises and shrapnel, you're good to go...!!!
I love new old saws. Really, fire it up - but be ready to kill it just in case something goes haywire. Then grab a small softer rock and slice it up. If that works grab an agate to see how the saw handles something harder.
Let us know how it goes. I cleaned our first 10" and replaced the blade on it over the weekend. It's around 75 years old and still going. |
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Post by TheRock on Sept 4, 2019 2:22:00 GMT -5
Three weeks ago I purchased an 8” H.O.P. E. Saw on Craigslist. It is a cleaver step aww from what I understand. I’ve never had my own rock saw and this should be fun. I cleaned out the reservoir last night and I really hope the pump functions. Last night I added new tubing where it was missing. I read a very good artivle/PDF on the forum about saws in general (what’s a kerf etc). What advice do you have for me before I fire it up tonight? Thanks in advance! Are you running water or oil? Sorry I don't see any Pictures and I don't know the saw however you did say pump so I presume it is water. If so make sure You have a GFCI protector beats getting knocked on yer ARSE!  Like this guy did. |
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JR8675309
freely admits to licking rocks
Member since August 2019
Posts: 807
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Post by JR8675309 on Sept 4, 2019 4:55:13 GMT -5
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Post by Peruano on Sept 4, 2019 6:04:48 GMT -5
You have a handy saw. As a chop saw without a cover, it may fling some spray around (irrespective of whether oil or water). I hate rust and hence use oil in my trim saw under most situations. Water only when oil might penetrate a porous stone. You may want to build a containment screen around the saw depending on where you are using it and how much it ejects. Gluing stones onto 2x2 wooden blocks may facilitate clamping them in the vice and hence avoiding their twisting during the cut. Starting the cut gently and perhaps taking some of the pressure off as the cut is near the end may be useful. The start is to keep the blade from skating sideways on a sloping rock; the latter is to reduce breakage as the cut approaches the end. My best advice would be to cut small, slow, and soft until you have a feel on what the saw, the blade, and your situation will allow. Enjoy.
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JR8675309
freely admits to licking rocks
Member since August 2019
Posts: 807
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Post by JR8675309 on Sept 4, 2019 19:40:09 GMT -5
You have a handy saw. As a chop saw without a cover, it may fling some spray around (irrespective of whether oil or water). I hate rust and hence use water in my trim saw under most situations. You may want to build a containment screen around the saw depending on where you are using it and how much it ejects. Gluing stones onto 2x2 wooden blocks may facilitate clamping them in the vice and hence avoiding their twisting during the cut. Starting the cut gently and perhaps taking some of the pressure off as the cut is near the end may be useful. The start is to keep the blade from skating sideways on a sloping rock; the latter is to reduce breakage as the cut approaches the end. My best advice would be to cut small, slow, and soft until you have a feel on what the saw, the blade, and your situation will allow. Enjoy. Those are great ideas and I plan to employ them shortly! |
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JR8675309
freely admits to licking rocks
Member since August 2019
Posts: 807
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Post by JR8675309 on Sept 4, 2019 19:41:41 GMT -5
Three weeks ago I purchased an 8” H.O.P. E. Saw on Craigslist. It is a cleaver step aww from what I understand. I’ve never had my own rock saw and this should be fun. I cleaned out the reservoir last night and I really hope the pump functions. Last night I added new tubing where it was missing. I read a very good artivle/PDF on the forum about saws in general (what’s a kerf etc). What advice do you have for me before I fire it up tonight? Thanks in advance! Are you running water or oil? Sorry I don't see any Pictures and I don't know the saw however you did say pump so I presume it is water. If so make sure You have a GFCI protector beats getting knocked on yer ARSE! Like this guy did. I intend to run oil. That’s what was used prior and am planning to stick with that. That is, unless I hear reason not to and I am all ears. |
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Post by TheRock on Sept 4, 2019 20:34:43 GMT -5
Does the saw have a good drain plug to drain the oil? If not you need to weld a 1" short nipple on the saw tank and then install a 1" full port ball valve to drain the saw through a bucket and paper grocery sacks for filters let the oil drain through the paper sack filters. I have a Barranca Diamond 10" saw and there was a rubber plug in the bottom to drain the saw on that design oil would go EVERYWHERE all over the cart it was bolted down to, I fixed it all real good! none the less the saw needs a good way to drain it so you can filter the dirty oil. Good luck. |
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JR8675309
freely admits to licking rocks
Member since August 2019
Posts: 807
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Post by JR8675309 on Sept 4, 2019 21:14:50 GMT -5
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Post by hummingbirdstones2 on Sept 7, 2019 20:33:55 GMT -5
Can you take it apart at all? If not, maybe you could see inside from the inlet side to check it out. Turning the pulley side by hand should spin the impeller inside unless it's stripped or broken and not gripping the shaft anymore.
If it was frozen by solidified mud, corrosion, or debris the pulley wouldn't turn at all. If it just needs a prime you might be able to pour some oil down into the inlet tube to get it going. |
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JR8675309
freely admits to licking rocks
Member since August 2019
Posts: 807
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Post by JR8675309 on Sept 7, 2019 21:23:56 GMT -5
Can you take it apart at all? If not, maybe you could see inside from the inlet side to check it out. Turning the pulley side by hand should spin the impeller inside unless it's stripped or broken and not gripping the shaft anymore.
If it was frozen by solidified mud, corrosion, or debris the pulley wouldn't turn at all. If it just needs a prime you might be able to pour some oil down into the inlet tube to get it going. How timely, I just took it apart and it looks great, brand new in fact. Turns fine inside. I ran the saw and tipped the hoses so oil would go in, but it only went up the tube an inch. Now I wonder if there IS supposed to be a pump in the reservoir. Here it is running: res.cloudinary.com/jr8675309/video/upload/v1567909256/0E49A005-32AB-4CB9-A9FD-B836D15758BF_psb08c{auto-correct: MOV files not allowed} |
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Post by hummingbirdstones2 on Sept 8, 2019 11:00:56 GMT -5
Hmmm. If it's only just starting up from the pump outlet I'd take the hose loose up top and point it back into the reservoir and try it.
If it pumps oil out on the same level as the pump (or lower) then there are a couple of possibilities. Maybe a blocked or undersized orifice or outlet on the top end. My drop saw has done the same thing if the valves at the top end get clogged.
If it isn't that, all I can think of is belt slippage or a bad seal inside the pump reducing the lift it needs to get the oil to the top. |
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JR8675309
freely admits to licking rocks
Member since August 2019
Posts: 807
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Post by JR8675309 on Sept 8, 2019 16:00:31 GMT -5
That’s great Info. I’m going to try this in a little bit and I’ll let you know how it goes.
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JR8675309
freely admits to licking rocks
Member since August 2019
Posts: 807
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Post by JR8675309 on Sept 14, 2019 20:50:57 GMT -5
So here is the latest: I think this may have been set up originally as a water saw and someone just started using oil in it. I’ve gotten almost all of the air out of the lines and the oil is rising higher. The interesting thing about the set up is there’s copper tubing someone ran alongside the blade but put in a tremendous and unnecessary arc. I took the copper off and let the tubing hang over the rock and I think we are closer. I’ll let you know how it goes!
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El JeffA
spending too much on rocks
Member since February 2016
Posts: 353 
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Post by El JeffA on Sept 14, 2019 21:15:28 GMT -5
Good luck with this! Sounds like you are getting close. And of course we want to see the results...
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JR8675309
freely admits to licking rocks
Member since August 2019
Posts: 807
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Post by JR8675309 on Sept 15, 2019 14:50:44 GMT -5
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Post by hummingbirdstones2 on Sept 16, 2019 8:31:55 GMT -5
Glad to hear it's working. The mineral oil we use (Finavestan 85) pumps almost as easy as water - at least when it's clean.
You could try Alum Oxide dressing stick - or a piece of an old Silicon Carbide wheel - to dress your blade. If the saw is working well enough to make you want to keep it you should treat yourself to a new blade at some point.
Hope the little pump keeps pumping and you have lots of fun with the saw... . |
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JR8675309
freely admits to licking rocks
Member since August 2019
Posts: 807
|
Post by JR8675309 on Sept 16, 2019 14:37:53 GMT -5
Glad to hear it's working. The mineral oil we use (Finavestan 85) pumps almost as easy as water - at least when it's clean.
You could try Alum Oxide dressing stick - or a piece of an old Silicon Carbide wheel - to dress your blade. If the saw is working well enough to make you want to keep it you should treat yourself to a new blade at some point.
Hope the little pump keeps pumping and you have lots of fun with the saw... . Yeah I plan on keeping it for sure. I’ll follow your suggestions. Someone also suggested using a “bastard” file and tapping the edges together. Yes, treating myself is also an alternative. I’ll show you as Slab as soon as I get this thing sharpened. OH and I’m not getting spray! It’s pretty well contained to a rear splash guard. Thanks for the support for this newbie! |
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JR8675309
freely admits to licking rocks
Member since August 2019
Posts: 807
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Post by JR8675309 on Oct 13, 2019 6:58:51 GMT -5
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Post by Rockoonz on Oct 13, 2019 13:33:16 GMT -5
IMO cut a grindstone and go ahead and use the blade for practice with softer and less valuable materials, then when you can get a 303 or 301 style sintered blade. In the meantime don't force it, you can expect pretty slow cutting with the old continuous rim blades, and adding force to the weight of the saw is going to dull the blade. If your lubricant flow is still minimal you might consider some kind of sump pump. |
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Like this guy did. 
