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April 25, 2019, 02:14:42 pm
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Diamond Devil....Vertical Lap

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Author Topic: Diamond Devil....Vertical Lap  (Read 2441 times)
ColorShapeTexture
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« on: March 20, 2011, 05:13:57 pm »

I finally have it completed.
My combo 6" and 8" cabbing flat lap machine.
And with the prices of replacement wheels for the Genie and the Titan this will be a real money saver.

Right now I pay $17 for a 6" 100 grit disc.
                          $24 for a 8"  "      "     "  .

Genie 6" is $100 to $140 plus.
Titan  8" is $180 to $240 plus.   

I am not real good at math. But that is like 6 to 10 times more expensive to replace the diamonds.
 Those stove top grinding wheels are very expensive to use and replace.

 But its no wonder they wear out fast. They have them spinning at maximum RPM all the time. This creates more heat and wears them out fast.

 The Diamond Devil is totally controllable from 0 to 1850 RPM.
Although new caber's will find it much easier to use. Even experienced lapidary's will love being able to slow the RPM down to make a few passes. That will take all those flat spots out easier with out creating more divots.
 
 Speaking of divots. That is what the round wheel grinders are doing. They grind divots by the very nature of their shape. It is no wonder so many people have problems with flat spots using those old fashion grinders. Think about it.

 And in the end. When you are about done sanding and are ready for the pre polishes and the polish. You have to take the end off the stove type machines and put on FLAT LAPS to complete the final sanding pre polish and polishing. Why not use a real Lapidary machine that is designed and built as a lapidary machine. Not a bench grinder that has been adapted to stone grinding. 

I invite any and all questions and comments.
Thanks   Jim




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mirkaba
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« Reply #1 on: March 20, 2011, 06:19:05 pm »

Looks too clean! Have you made any cabs yet? bricks
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Bob

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« Reply #2 on: March 20, 2011, 07:12:20 pm »

I like it !!  yes
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thewrightthings
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« Reply #3 on: March 20, 2011, 08:05:28 pm »

I am truly impressed.  Very creative.
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metalartz
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« Reply #4 on: March 20, 2011, 08:34:02 pm »

0 to 1850 RPM. 

what is driving it.  single motor?

looks good
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David

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« Reply #5 on: March 20, 2011, 09:03:57 pm »

0 to 1850 RPM. 

what is driving it.  single motor?

looks good

i'm curious also. single motor ??

i'm using a similar DIY machine but with SC..  it works but needs some tuning..
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« Reply #6 on: March 20, 2011, 09:20:11 pm »


Jim, am I not seeing something here??..The wheels look the same size and they don't look like they are even 6" if they are there.
Just wondering...

TOG
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« Reply #7 on: March 20, 2011, 09:51:41 pm »


Jim, am I not seeing something here??..The wheels look the same size and they don't look like they are even 6" if they are there.
Just wondering...

TOG
You can put 6 or 8" laps on there. Easy to change and you can use diamond or SC pads on a lap also.
I have a couple of these out in the equipment shed, the opal cutters really like them.

Tony
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Get free shipping and/or discounts on products at Cabking by using the following link.
http://cabking.com/ref/IdahoRockShop/
ColorShapeTexture
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« Reply #8 on: March 21, 2011, 07:22:19 am »

Hello all.

Thanks for the questions.

It is one full 1/2 horse industrial motor.
The wheels look small because the combo 6"/8" is 32" wide.
Those are 6" on it. I don't use 8" cause I don't need the size. I built this first one for Bryan Majors who owns Diamond Hill mine to trim and prepare specimens. But he needed the 8" flat lap also to make the big specimens sit up straight.

I have seen and heard of folks having problems because the wheels were too close on the stove top grinders.
 When set up with 6" wheels there is 5" between the disc. When set up with 8" disc. There is 3" between. That way large cabs are no trouble. And all the other lapadary projects like knifes can be done without the other wheels being in the way.
I havent tryed it yet. In fact I don't know if there is one offered out there. But the center hub will spin a 10" lap.
The normal machine will be 6" only. Which helps keep the water mess to a minimum.
The 6/8" is for the lapidary that needs the extra clearence. And larger flat lap.

And Tony you are right on about opal cutting. All the opal guys in Australia use a vertical flat lap with variable. If you turn the wheel too fast like with the stove top machines, the cutting and polishing is too out of control for opal. Too much heat.
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Rocksnot
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« Reply #9 on: March 21, 2011, 09:55:16 am »

is this machine store bought or home brew?
I have never seen one but I like it  :)
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« Reply #10 on: March 21, 2011, 11:03:14 am »

What is a stove top grinder? (homemade?) How are the pullys belt/belts arranged? One of the "Oldtimers'' in the club switched over to flat laps a couple years ago and swears he'll never go back to wheels. I tried it and felt like a "cub bear in boxing gloves" I still use the old wooden spool for polishing my domed Opals. The bigger flatter ones I do on wheels.
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Bob

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Rocksnot
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« Reply #11 on: March 21, 2011, 12:26:47 pm »

Interesting,  I have only used flat laps (that's what the Inland swap top come with)  Never tried any wheels so I can't say anything about comparisons between the two.  One thing I notice on the flat lap is that if I want less feet per minute I just move closer to the center of the  lap.  can't do that on a wheel.
Some time I think I would like to try a wheel just to see if I like it and how it differs...
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ColorShapeTexture
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« Reply #12 on: March 21, 2011, 12:41:51 pm »

When I refer to the old stove tops. It is the Pixie or the Genie or the Titan. Or any of the other bench grinders.




Yea mirkada isen't it exactly what you need when you can go to the center and slow the agression of the cut down? I wish I could put my variable speed on everyones machine. You would never go back to wide open. Its so much easier when you can slow it down.

Learning to cut cabs on or to use one of the stove top machines is like learning to drive with the gas wide open.

 You realy are set up to fail without a lot of practice and patience.
 I like teaching and letting kids grind on my machine. I would not let them even use a stove top or my machine running wide open.
 But with a little twist of the speed dial and the Diamond Devil is safe for kids. And beginners have a much easier time learning to cut.
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« Reply #13 on: March 21, 2011, 01:08:44 pm »

Haha......Yep...... That sorta looks like my old Crown....I do use discs on the left hand side though. Diamond, SC and leather with velcro! Just use a leather polish pad on the right. So how is the belt drive set up? Or does one need to purchase to find out?
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Bob

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« Reply #14 on: March 21, 2011, 04:50:51 pm »

   that looks like an awesome machine Jim!   wish i could try it =)
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ColorShapeTexture
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« Reply #15 on: March 21, 2011, 06:37:10 pm »

The motor is mounted between the 2 disc on the right. It drops down to tension the belt for the 2 on the right.
Then there is a second pulley on the motor. It drives the disc on the far left. It is tensioned in a horiz. motion. All three driven off one motor. Which is plenty of power believe me. Kinda like holding back a half a horse with your thumb.  lol
 Everything is 1to1. Don't need step down pulleys as it has plenty of power and  is variable speed.
I wish you could give it a whirl to rocknroll. I bet you wouldn't go back... Lord willin I'll be showing it in Calif. some day soon.   Later   Jim
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RoyKims
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« Reply #16 on: March 21, 2011, 09:09:53 pm »

bearings must have cost quite a bit.
6 total ???? or did you say one was direct ?
i'd also like to see the rear. i know how i'd set it up..
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RoyKims
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« Reply #17 on: March 21, 2011, 09:10:52 pm »

forgot to ask.. what size shafts ??
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« Reply #18 on: March 21, 2011, 09:21:34 pm »


tks Tony....I like my slat lap.....although I haven't turned out anything yet....pretty new to this lapidary stuff.....I can cab like crazy though.

TOG
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-Gary

Of all the things I've lost..I miss my mind the most.

Whether you think you can, or you think you can't, you're probably right.
dlackmond
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« Reply #19 on: October 22, 2011, 03:02:15 pm »

Have you put it on the market yet ? Been waiting sence you showed at the MAGMA trip. PM me and lets talk! I possibly would like to be a dealor also.

Dicky
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« Reply #20 on: June 26, 2015, 01:52:13 pm »

I think its awesome. Did you buy the plans to build it, or design it yourself? Are the plans available? Where did you buy the parts?
Regards,
Jminshal



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« Reply #21 on: July 06, 2015, 02:20:26 pm »

I'd love to know where you purchased the plans and the parts.
JM
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