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Author Topic: Copper Lap Wheels  (Read 247 times)

Diamondwheel

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Copper Lap Wheels
« on: August 12, 2017, 04:48:53 PM »
Good evening forum,

I quite new to this interesting art. My grandfather passed away and I have been left his entire faceting equipment, gems and assorted gear, Only today I dug it out and gave it a clean up, thinking I will give it a go.

In the goodies were several copper wheels, all with varying permanent maker number on their backs. numbers like 30/60, 200, 100, 0/23 would anyone be able to advise on what these may mean?

Regards
Diiamondwheel

Aussie Sapphire

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Re: Copper Lap Wheels
« Reply #1 on: August 13, 2017, 08:41:03 AM »
Those numbers dont really mean anything to me but perhaps others might have ideas.  Might also help if you describe what other laps he had in his kit and how they are marked.  Process of elimination might help identify what the coppers were used for/with.

cheers
Leah
Aussie Sapphire - The Lapidary Warehouse

MakkyBrown

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Re: Copper Lap Wheels
« Reply #2 on: August 13, 2017, 12:30:24 PM »
Good evening forum,

I quite new to this interesting art. My grandfather passed away and I have been left his entire faceting equipment, gems and assorted gear, Only today I dug it out and gave it a clean up, thinking I will give it a go.

In the goodies were several copper wheels, all with varying permanent maker number on their backs. numbers like 30/60, 200, 100, 0/23 would anyone be able to advise on what these may mean?

Regards
Diiamondwheel
My guess they are just grit sizes just coarse. They could be sintered or someone has tried loading copper with very coarse grits.
We are a family of 4 from Southern Tasmania.

swirly

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Re: Copper Lap Wheels
« Reply #3 on: August 13, 2017, 12:54:25 PM »
i used copper laps with coarse loose diamond back in the 1970,s and 80,s.

Rusted

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Re: Copper Lap Wheels
« Reply #4 on: August 13, 2017, 06:34:32 PM »
I have seen quite a few of these.

Often quite thin 2.5mm to 3mm though probably pre metric 8 guage or something. Usually no idea what they are loaded with but often quite coarse.
I tried refacing one once but they are much too thin to be usable, maybe possible if they were bonded to some sort of master lap, though for all the trouble I think the scrap yard would be better.

If they are the thicker copper laps around 6 or 7mm then they could be refaced and used with finer diamond, though I would be testing them on a cheap piece of stone first to make sure they are clean of the coarse grit. For finer loose diamond eg.3000 grit or 14000 they are great.

Plated Diamond faceting laps are quite cheap, they do have some issues but for a beginner they are ideal, see the good folk at Aussie Sapphire for their recommendation of grit sizes.

If you are keen to try your hand then you should mosey along to your local lapidary club and get a bit of tuition, at the very least sit and watch someone doing it for a while, then when you have figured that it looks pretty difficult get some tuition and find out for yourself that it isn't (difficult)

FlashGP

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Re: Copper Lap Wheels
« Reply #5 on: August 13, 2017, 09:59:35 PM »
Hi Diamondwheel, welcome to the forum.

When you have a go at faceting and have worked out the grit sizes on your laps, bear this in mind.

I have found Quartz does not like diamond with an oil lubricant, but cuts better with oxides.  Then I found quartz cuts really well on a copper lap charged with diamond using water dripped over the wheel faster than 2 drops a second.

Yet Zircon hates the same lap with a water lubricant, but loves a thin oil libricant like snake oil sold by Aussie Sapphire.

So as you cut different stones try different lubricants to work out which is best for the stone you are cutting.

One last thing, use your lubricant to clean the lap as you cut, the crud that otherwise builds up is called swarf and slows down cutting and causes scratches if not cleaned away.

Regards
Flash
Yours Sincerely
Flash (Gordon)

Diamondwheel

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Re: Copper Lap Wheels
« Reply #6 on: August 14, 2017, 01:39:00 PM »
Forum,

Cheers to all for the responses, it's time to get dirty and give it a go.

I am sure I will ask your advice in the coming months.

Regards
Diamondwheel

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