old gem master

[rough2cut]

The reason you dont need a reverse is that the spindle plate has a left hand thread. Run it the other way and your laps come loose.
a sewing machine motor is noisy and under powered. I use a 3 phase motor with a single to three phase inverter. Motor is about $150
and the inverter about $300 plus a external on/off, reverse and variable speed dial. Cheaper than $4000 for a new GF4.
That about all I can do for you. I given all the options I know and having owned ,restored and used Gemmastas for 36 years I know every nut and bolt on them.

Regards Tony

 

[benny1]

Thanks Tony will take your great advice
cheers
benny

 

[Jaros]

From an article i read somewhere at some stage, back in the day a nugget was a piece of gold no smaller than 5 or 10oz, anything smaller than that was called something else, can someone confirm this for me!
This is from a question posed by DWT in the forum. Can anyone help with the "something else".

 

[benny1]

???

 

[Kingsolomon]

How's the machine coming along? Got a motor yet?

 

[benny1]

got it up and going but the head is pretty stuffed its wobbly and the degrees are
out of line. ..I took it to a guy who works on them he couldn't help me. ..I've spent about 700 getting a motor and speed dyle and faceting gear...it's so frustrating and I really want to start on some of my sapphires but the head is too iffy always having problems..I can do a really good stone at the club but on this no good.
I know it's a big ask but I really need either an fg 1 or 2 head like what's the chance of that happening willing to spend 400 on an old head if someone's got a good one
cherrs

 

[rough2cut]

Firstly this is a very tunable faceting head but its a complicated procedure. Im located in Sydney if that helps.

 

[benny1]

my number is 0432036826 or if you give me your number i could call you
cheers

 

[rough2cut]

I have a tuning manual for this now.
Email me at: [email protected] and I will reply with an attached PDF

Regards Anthony