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Author Topic: Gemmasta Model GFE 3  (Read 140 times)

bkbourne

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Gemmasta Model GFE 3
« on: July 07, 2024, 12:23:02 PM »
The lapidary club in Melbourne I belong to has 3 Gemmasta GFE 3 faceting machines, including a recently purchased 2nd hand machine which is fine.
Two of the machines rotate clockwise as you look down on the master lap, the other rotates anti-clockwise. Just wondered if there was a way to make the anti-clockwise rotating machine the same as the other two. Is it a simple wiring issue of do I need to delve inside the motor to figure it out. Was there initially a choice in which one you ordered?. Any help or directions would be appreciated because we use these for teaching our members and it would be easier if they were all the same. Many thanks, Bruce.

Bucket

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Re: Gemmasta Model GFE 3
« Reply #1 on: July 07, 2024, 12:39:25 PM »
I'm not sure if that model had a reversing switch? If not check the motor and find out if it's low voltage, it should be on a label attached to the motor itself. If it is low voltage, it should be just a simple changing of the input wires around. As I'm not a sparky, if its 240 volt, I'm not sure if that will work. Also check the drive belt isn't fitted in a figure eight patten, I've seen it done once! It should be a relatively simple fix either way.
Common sense isn't exactly common

bkbourne

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Re: Gemmasta Model GFE 3
« Reply #2 on: July 07, 2024, 03:53:54 PM »
Thanks Bucket, I’ll check next time I’m back at the club.

Rusted

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Re: Gemmasta Model GFE 3
« Reply #3 on: July 07, 2024, 04:50:27 PM »
Is the GF3 the one with the small sewing machine motor under the deck? If it is they are easily reversed, they had a switch to do just that originally.

If it's the one with the big heavy washing machine type motor hanging off the back it is still possible but would require a bit of wire juggling from a sparky. Basically swap the wires on the start winding around, not difficult but would require someone moderately competent with electric motors.

bkbourne

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Re: Gemmasta Model GFE 3
« Reply #4 on: July 07, 2024, 10:49:17 PM »
Yes Rusted, the small sewing machine motor. Don’t think there’s a reversing switch. I’ll check during the week. Thanks.

Rusted

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Re: Gemmasta Model GFE 3
« Reply #5 on: July 08, 2024, 10:50:00 AM »
Sewing machine motor should already have a switch on the front of the base, a three position changeover switch, Reverse off and forward. It's just a simple silver toggle switch. It should be next to the speed controller. The speed controller is also simple, it's a cheap light dimmer behind the knob.

 

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