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 Post subject: Facetron RPM Chart
PostPosted: Fri Mar 17, 2017 5:45 pm 
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Hi!
Been lurking around here for some while now! So i better say hi now! :D HI! :D

Short intro: Read Tom Herbst books, excellent read! this only made me more curious about faceting, there was really no turning back, i knew i was sold after viewing the first faceting video on youtube! Got a machine from jarvi tool in October and have been cutting ever since! :D I Love it! :D

Anyway i read a lot of articles/tutorials about faceting and they all refereed to RPM, witch is the only sensible measure to use with all the different brands, but i never managed to find rpm information for my faceting machine. Brought a tachometer home from work today to measure. Posting my results here in case anyone else is also wondering about this.

Attachment:
facetron_dial_speed_rpm_chart.png
facetron_dial_speed_rpm_chart.png [ 34.51 KiB | Viewed 384 times ]


Alex.
@nordichue


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 Post subject: Re: Facetron RPM Chart
PostPosted: Sat Mar 18, 2017 2:53 pm 
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That's awesome! It would be great to get charts for all the most commonly used machines.


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 Post subject: Re: Facetron RPM Chart
PostPosted: Sat Mar 18, 2017 3:48 pm 
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Yes!!! It is very useful information... Thanks Alex =D>


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 Post subject: Re: Facetron RPM Chart
PostPosted: Sat Mar 18, 2017 4:07 pm 
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Interesting that the Facetron maximum spindle speed is less than 1000 rpms.
Too slow for preforming in my opinion. I prefer 2000 rpms maximum speed.

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 Post subject: Re: Facetron RPM Chart
PostPosted: Sun Mar 19, 2017 11:29 pm 
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The top speed of a Facetron can vary as supplied from the factory. It is also easily adjusted by the user. I have heard the top speed can be set at over 2,000 RPM.

Do this at your own risk of injury, death, or damage to your machine.

http://www.gemologyonline.com/Forum/phpBB2/viewtopic.php?f=8&t=17204&hilit=facetron+speed

Just recently used this to adjust a new one which had a very low top speed.

Allan

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 Post subject: Re: Facetron RPM Chart
PostPosted: Mon Mar 20, 2017 1:31 pm 
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abeck wrote:
The top speed of a Facetron can vary as supplied from the factory. It is also easily adjusted by the user. I have heard the top speed can be set at over 2,000 RPM.
Do this at your own risk of injury, death, or damage to your machine.
http://www.gemologyonline.com/Forum/phpBB2/viewtopic.php?f=8&t=17204&hilit=facetron+speed
Just recently used this to adjust a new one which had a very low top speed.
Allan


Ah, so there is a dc motor control board with a maximum speed pot.

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 Post subject: Re: Facetron RPM Chart
PostPosted: Mon Mar 20, 2017 2:57 pm 
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Great info abeck! I have also noticed that the speed varies after the machine has run for some time, My graph was made on a cold machine, when i control checked the rpm after an hour or so of running the values where 30 - 50 rpm higher.


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 Post subject: Re: Facetron RPM Chart
PostPosted: Mon Mar 20, 2017 9:28 pm 
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alex3d wrote:
Great info abeck! I have also noticed that the speed varies after the machine has run for some time, My graph was made on a cold machine, when i control checked the rpm after an hour or so of running the values where 30 - 50 rpm higher.


A high quality control board should not vary that much.

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 Post subject: Re: Facetron RPM Chart
PostPosted: Thu Mar 23, 2017 8:28 am 
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thomas.adamas wrote:
Interesting that the Facetron maximum spindle speed is less than 1000 rpms.
Too slow for preforming in my opinion. I prefer 2000 rpms maximum speed.

For me, the optimal cutting speed seems to be about 70% on any of my machines. I really never run them up at full speed, and feel the stone cuts faster at a little slower speed.

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