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Author Topic: wanted a 96 index wheel for old robuilt  (Read 547 times)

watty

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wanted a 96 index wheel for old robuilt
« on: April 04, 2017, 05:10:26 PM »
Im looking for a 96 index wheel for my old robuilt facet machine which is the black one black.
« Last Edit: April 09, 2017, 12:28:08 PM by watty »

Rusted

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Re: wanted a variable speed motor
« Reply #1 on: April 05, 2017, 07:16:56 AM »
Welcome to the forum watty

It would help us a bit if we knew what type of faceting machine.

Gemmasta machines used a sewing machine motor with a Thyristor for the speed controller. Thats really just a light dimmer.
The sewing machine motor is a brush type motor which are fairly common in all sorts of appliances.

I get weary of the noise the motor makes on mine and have been thinking about replacing it with a DC motor and PWM speed controller. I think a smallish DC power supply would fit under the deck of my Gemmasta 3 so relatively easy build I hope.

MakkyBrown

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Re: wanted a variable speed motor
« Reply #2 on: April 05, 2017, 07:56:04 AM »
Welcome to the forum watty

It would help us a bit if we knew what type of faceting machine.

Gemmasta machines used a sewing machine motor with a Thyristor for the speed controller. Thats really just a light dimmer.
The sewing machine motor is a brush type motor which are fairly common in all sorts of appliances.

I get weary of the noise the motor makes on mine and have been thinking about replacing it with a DC motor and PWM speed controller. I think a smallish DC power supply would fit under the deck of my Gemmasta 3 so relatively easy build I hope.
You could control the motor off the arduino running your encoder :) Just need a decent off the shelf motor driver and power supply.
We are a family of 4 from Southern Tasmania.

journeyman

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Re: wanted a 96 index wheel for old robuilt
« Reply #3 on: July 11, 2017, 07:36:27 PM »
Guys, for a good 12vdc motor & driver try Motion Dynamics & get a 240vac to 12vdc convertor off the net. have modified 3 gemmasta's so far. All fits in underneath. Costs about $250 for bits then get a handy electronic/electrician to wire it all up.

Jimnyjerry

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Re: wanted a 96 index wheel for old robuilt
« Reply #4 on: July 12, 2017, 08:10:19 AM »
Watty for your 96 index wheel check location below. Wheel will not be cheap.

Robilt Lapidary Supplies
 Manufacturers of lapidary machines for over 45 years. Tumblers, trimsaws, slabsaws, grinders, polishers, vibro laps, felt laps, faceting and combination machines. Suppliers of grits, laps, wheels, blades, dops, discs. Service, repairs, spare parts, rough/cut/polished stones.
 167 Endeavour Drive, North Cranbourne VIC 3977
 Phone: (03) 5996 0750
 Mobile: 0414 469 203

I try to take one day at a time, but sometimes several days attack me at once.

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