Deleted
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Post by Deleted on Jul 14, 2017 21:04:51 GMT -5
I ground it good, even made the groove larger for any foreign objects. It fit in a MFRB diagonally but the length made the box a paralelegram. Extra toys thrown in. Have fun with the package. Thank you sir!! Woot! |
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jeannie
spending too much on rocks
Member since January 2017
Posts: 266 
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Post by jeannie on Jul 14, 2017 21:33:31 GMT -5
Midnight Wood takes the ladies to the Gun Show Now I have to get those super tight workout shirts for future pics Oh ya! Midnight Wood! 😘 Lol!! |
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jamesp
Cave Dweller 
Member since October 2012
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Post by jamesp on Jul 17, 2017 7:59:34 GMT -5
![]() PM me your address |
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Deleted
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Post by Deleted on Jul 20, 2017 19:11:23 GMT -5
So, above I made a plea for help from the master himself. jamesp grabbed some scrap and whipped me up a angle jig to hold large cubes in my slab saw at a 45 degree angle. This so I can slice off the edges all around the cube to make a polyhedron preform. its being held in place by a orange handled spring clamp in the vice of my 18" Covington. Thanks Jim!  setting the cube in lace. Jim was super cool and opened up the inside edge of the angle iron so the sharp edges of the cube would nestle properly. i could have chipped the corners with a rock hammer as well. Thanks Jim.  measuring it up. jeannie and I did some math so the length of the cut needed is now a percentage of the whole and not some geometry drawn on the rock as before. 28% I measure all three dimension of the cube and work from the smallest. this cube is 152mm on the shortest side, so I am removing 42mm from the edge.  I measured and scratched the marble with a razor knife. Using the cross feed the blade is aligned with the cut. Thiis so as to just barely remove the scratch.  More to follow. I just started cutting the third edge off. 9 more to go (ish). Thanks Jim. |
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Deleted
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Post by Deleted on Jul 20, 2017 19:47:19 GMT -5
four edges removed  Not the best polyhedron coming together. Thats OK. Its because the 'cube' was 4mm from shortest side to largest side. This simply means more time on the supergrinder. The spheremaking machine does the rest. |
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jamesp
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Member since October 2012
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Post by jamesp on Jul 21, 2017 3:46:10 GMT -5
I get it. Kinda figured it was going to be used this way.
Easy jig, effective. Concise. I can't walk away from such a mechanism. Had it built 1 hour from the time I got the request.
Effective tooling is a fetish. I hope it sets your rock at a perfect 45 degrees. I tried to get it close.
I have the exact same saw. Love it. It's not overbuilt or over powered. But if it is properly lined up and aligned it is a giant slayer.
The cheaply designed leather washer slip clutch system has run overnight on several occasions in the 'slipping mode' and never been replaced.
One of the finest mechanical slip systems on earth. Freaking $2 leather washers. Hat's off to Covington.
I replaced the ~4 inch brass worm gear, that's it. The screw clamps are a bit light weight.
1/2 HP motor. Easy to change 6 speed feed with that spring loaded v-belt tensioner. Great design.
I changed the blade speed via pulleys. Segmented blade can run at higher RPM.
I also put a 2" X 4" under the right side two feet to tilt the saw oil toward the blade. The whole saw is tilted to the left.
Rake the mud to the right and let it pre-drain back to the left under the blade.
Keeps the mud away from the bottom of the blade supplying clean oil to blade.
#1 target, feed-the-blade-clean-oil. The rest of the mud splattered all over the inside of the saw means nothing.
And added a 1.5 inch angle iron front to back about 12 inches from right wall to store mud. Pre-catchment sump.
(Mud has to be scooped from left compartment to right compartment). When sump is full it gets cleaned out.
Old mud in the right side sump gets dense from settling and is easier to remove instead of being in suspension.
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jamesp
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Member since October 2012
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Post by jamesp on Jul 21, 2017 3:50:26 GMT -5
I have the same orange handled spring clamps. They get lots of use.
The orange rubber is no longer on them, the heat from clamping during welding operations melted and ruined them.
I used them to clamp your dohicky whilst welding it.
Got tired of melting the plastic clamps.
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Deleted
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Post by Deleted on Jul 21, 2017 8:10:00 GMT -5
Working great. I'm halfway done cutting the edges off. Easy peasy, chicken dinner. I didn't finish last night because game of thrones.
The shapes of the angle iron automatically make the angle perfect. As you said. Simple and effective.
My example of that saw has a 3/4HP motor, but the feed on slowest speed is too fast. The feed binds and the motor overloads the circuit breaker. I put a 7" pulley on the drive to slow it down for full height cut agates. No leather slippage. Where do I find this device.?
I need to make a "saw alignment" thread so you and the rest can teach me how. I didn't grok that one. That cube isn't even close to square, lol.
Thank you kind sir
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,602
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Post by jamesp on Jul 24, 2017 5:17:34 GMT -5
Cube not square ? Cutting a dead square cube is a function of how square it is clamped. That Covington clamp has a lot of play in it for odd shaped rocks.
I doubt it is the blade to carriage alignment, that is a fairly precision adjustment.
You will have to measure squareness of cube to blade AFTER it has been tightened down, not an easy task.
It is easy to clamp it skewed from 90 degrees.
Slip clutch is on feed, not blade drive.
However the blade can jam if the carriage is way out of alignment. The blade can jam if it's not dressed well. The blade can jam if the oil is too dirty. The blade can jam if the feed is too fast.
The slip clutch is on the feed, not the blade drive. The feed drive can slip, not the blade drive. So yes, if the blade jams the breaker can kick.
If the carriage is way out of alignment one face of the blade will be rubbing on the rock after the the blade has advanced into the rock a ways.
For example if you spray paint both sides of the blade and the carriage is aligned perfect the paint will remain about untouched on both sides of the blade.
Because the diamond segments are wider than the blade plate material. I.E. , diamond kerf wider than blade plate.
Measure gap between blade and carriage in 2 places, out at edge of blade and another measurement toward center of blade. Blade and carriage should be dead parallel.
You will have to supply photos of front of carriage where it attaches to 3/4" or 1" solid rod, that is where the alignment set screws are.
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Post by fantastic5 on Jul 24, 2017 8:17:07 GMT -5
@shotgunner (water brother) - please make a saw alignment thread! After reading jamesp answer to you, my head hurts. I bought a big saw several years ago and plan to recondition it when I have the time. Didn't realize everything that can go wrong. A saw alignment thread would be ideal for reference in the future. |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,602
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Post by jamesp on Jul 24, 2017 9:49:37 GMT -5
Well fantastic5, all saws are different and explaining in written form will be complicated. There is a bit of adjusting to do. My saw came with no instructions. It took me a while to figure it out. Could have called the manufacturer. But tinkered till I figured it out. Probably am not mentally able to explain it in typed form. Photos may get it done. Once you have done it once on your given brand it is easy. Mine has 2 set screws that serve as guides along the front of the carriage that kicks the carriage into alignment to saw blade. Then there is 2 guide tension adjustments in the ~middle of the carriage to keep carriage from lifting or being to tight. But that is not enough info to teach someone how w/out detailed photos. |
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Deleted
Deleted Member
Member since January 1970
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Post by Deleted on Jul 24, 2017 11:11:45 GMT -5
Well, the words did it for me. I get it. Does our saw have adjustment to make sure the floor of the vice is perpendicular to the blade? Anne, what saw do you have? fantastic5jamesp |
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Post by fantastic5 on Jul 24, 2017 11:51:57 GMT -5
Well, the words did it for me. I get it. Does our saw have adjustment to make sure the floor of the vice is perpendicular to the blade? Anne, what saw do you have? fantastic518" Frantom (I think). I bought it off Craigslist 3 years ago. A guy down in Tallahassee was selling off his fathers estate. Then we started a 'simple remodel' that has taken up all of our time. Hoping to have everything finished and work on it this winter. I'll certainly post pictures and ask for help once I get started. |
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Deleted
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Post by Deleted on Jul 24, 2017 13:10:20 GMT -5
Well, the words did it for me. I get it. Does our saw have adjustment to make sure the floor of the vice is perpendicular to the blade? Anne, what saw do you have? fantastic518" Frantom (I think). I bought it off Craigslist 3 years ago. A guy down in Tallahassee was selling off his fathers estate. Then we started a 'simple remodel' that has taken up all of our time. Hoping to have everything finished and work on it this winter. I'll certainly post pictures and ask for help once I get started. Then Rockoonz will be your man. He has that saw. |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,602
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Post by jamesp on Jul 24, 2017 17:34:53 GMT -5
Well, the words did it for me. I get it. Does our saw have adjustment to make sure the floor of the vice is perpendicular to the blade? Anne, what saw do you have? fantastic5jamespit has an adjustment to adjust the space that keeps the vice from lifting upward under the back of the vice. I have not noticed the vice adjustment. May be there, just never have found it. |
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Post by captbob on Aug 12, 2017 6:08:26 GMT -5
Had any time to work on your sphere?
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Deleted
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Post by Deleted on Aug 12, 2017 11:18:38 GMT -5
Thanks for thinking of me. All the corners are cut off. Supergrinder not finished. Class is on hiatus for august. So, no update really. Have a great weekend captbob! |
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Post by captbob on Aug 12, 2017 15:32:28 GMT -5
Mother in Law is here (w/ little yap yap dog) ... Hope your weekend is better than mine!
looking forward to progress reports once you can get back to it.
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Deleted
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Member since January 1970
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Post by Deleted on Aug 13, 2017 11:51:14 GMT -5
Weekend good. Finalizing things on a couple projects and ...... Ughhh..... Replacing the water heater at jeannie's townhome. H2O heater on second floor patio deck, up INDOOR stairs. Ughhhhhh SHE IS GONNA OWE ME BIG TIME!! |
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Post by aDave on Aug 13, 2017 13:41:12 GMT -5
Weekend good. Finalizing things on a couple projects and ...... Ughhh..... Replacing the water heater at jeannie 's townhome. H2O heater on second floor patio deck, up INDOOR stairs. Ughhhhhh SHE IS GONNA OWE ME BIG TIME!! Does not sound like fun at all. |
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