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Messages - Fissan

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Gemstone Faceting / Re: Gemmasta GFE3 Manuals
« on: January 27, 2020, 06:02:32 PM »
Have also just picked up a GFE3 and also chasing the manual. all my web search's have come up blank going to Shell lap's old site

Gemstone Faceting / Re: Help--wrong diamond in tin lap
« on: November 01, 2015, 03:03:04 PM »
I have a 20mm thick 6" aluminium disk with a 10mm thread in the centre and give the face a light skin each time I set it up in the chuck. I then have a bush made up with a 1/2" step on one end and 3/4" the other and a 10mm hole in the guts for a bolt. I then clamp the lap to the disk with the 10mm bolt and bush and machine the lap, after machining depending on the lap I may put the lap in the chuck and machine the centre boss down lower then the lap surface

Gemstone Faceting / Re: Help--wrong diamond in tin lap
« on: October 31, 2015, 11:15:50 PM »
I am glad I am not the only person who has done the same  ;)
I am in the fortunate position to be able to go out to my shed and skim the lap in my lathe, but the diamond will give a carbide tool what for until the layer is gone. once I have the layer taken off I finish with tool steel and a good size radius on the tool for a good finish and no scoring the lap before I use it just a clean with a Scotch bright pad and running water

Shows and Events / W.A Rockingham Gem club
« on: September 29, 2015, 01:23:18 AM »
 Open Day Saturday 17th October
 FREE entry
 Rockingham Districts Gem and Rock Hunting Club
 On Bungarree Oval at end of Crater Place Rockingham.
 Annual open day and displays of member’s creations
 17th October 2015 8 -30AM 4PM
Gem and Jewellery sales, Rock and Crystal sales, Rocks identified. Advice on silver smithing, lapidary, faceting, wire wrapping, enameling , glass working,   wax casting, mould making, workshop tours, cold drinks, Sausage sizzle, morning teas available and Free lucky dip for the kids

Gemstone Faceting / Re: Help with Robilt F1 machine
« on: April 23, 2015, 01:48:51 AM »
Oh, wondered myself what is was for. Have got my Robilt running well now changed the sewing machine motor and mounted a CNC DC motor and controller with a custom made drive pulley.

Gemstone Faceting / Re: How to tackle the impossible faceting
« on: October 12, 2014, 03:16:25 AM »
Some good ideas in here, I have just been given some fire opal from WA to see how it would come up and my first test run I found I was having the edges "pop" and chip but I was trying to grind it like a piece of CZ  :o

Gemstone Faceting / Re: Help with Robilt F1 machine
« on: September 02, 2014, 12:09:58 AM »
Found out today the bit of "CZ" I was using is actually corundum and was getting some orange peel on a couple of the facets using a copper lap with 8000 diamond. Swapped over to a zinc lap with 14000 diamond and it came up a treat ready for polishing

Gemstone Faceting / Re: Help with Robilt F1 machine
« on: August 31, 2014, 12:02:07 PM »
Have ended up replacing the dop holder as well as I felt the dops had too much play in the holder.
Have now got it all set up and have started a standard 8 sided brilliant on a bit of purple CZ. All the repairs have made a difference to the machine now the point on the pavilion all meet  :)
So now the fun and learning begins

Gemstone Faceting / Re: Help with Robilt F1 machine
« on: June 28, 2014, 08:14:38 PM »
These photos were taken while the machine was still in my Dads shed before he passed away and he had it set up without the master under it. I now have it set up at home and run a old lap the thin diamond lap.
I am slowly going through and cleaning up the old laps and replacing a few, just got a new zinc lap from Aussie Sapphire to try

Gemstone Faceting / Re: Help with Robilt F1 machine
« on: June 28, 2014, 12:50:45 AM »
Parts for my machine rocked up today  :) just need to finish cutting the stone I have set up in the machine then I can pull the machine down and give it a birthday.

Parts I have now are new bush's and shaft for the quill
Bush's for the mast
Adjustable yolk thread and adjuster screw
Dial indicator arm (that's missing)

Gemstone Faceting / Re: Help with Robilt F1 machine
« on: June 11, 2014, 07:42:00 PM »
Churning them out yes any good......HMM, well they will get better  ::)

Gemstone Faceting / Re: Help with Robilt F1 machine
« on: June 10, 2014, 08:57:20 PM »
 :) Got hold of John today and have parts ordered for my machine and a bit of info  :)
Machined up a new master lap today, looks like it's all starting to come together.

Gemstone Faceting / Help with Robilt F1 machine
« on: June 09, 2014, 10:46:25 PM »
Hi All
        Have got my Dad's old Robilt machine and have started to give faceting a crack, I am chasing any info people may have on these old machines so I can bring it back to original tolerance. I have spoken to John at Robilt but having trouble getting back info and contact with John.
Any info would be appreciated

Regards Bruce

Tell Us About Yourself / Very new to faceting
« on: May 20, 2014, 04:03:24 PM »
Hi All
        I am very new and green to faceting, I have just got a Robilt faceting machine off my Dad so be warned there may be a flurry of sillyish questions if I cant find it in the search section.

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