Sound fluctuations from cutter head

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kafkablues
Posts: 48
Joined: Mon Feb 22, 2016 7:13 am

Sound fluctuations from cutter head

Post: # 47725Unread post kafkablues
Sun Sep 03, 2017 6:30 pm

Hi folks, I have been cutting for about a year on and off and mostly getting decent cuts (after getting to grips with static etc). Just recently I have been experiencing something new. Up until now the sound coming from the cutter head and disc whilst cutting has been constant throughout. However during some of my latest cuts the sound from cutterhead/disc during cutting has been fluctuating. It's going from what I consider to be normal to quite loud, not mega loud but an increase non the less. I've stopped cutting for the moment just to check out what this is and ask if this something that needs attention????

As a note, the cuts where this has occurred seem fine.

Also I have no idea what wow/flutter sounds like in case that's a possibility.

Much appreciated.

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tragwag
Posts: 1260
Joined: Wed Jun 22, 2011 2:30 pm
Location: Providence, RI USA
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Re: Sound fluctuations from cutter head

Post: # 47767Unread post tragwag
Wed Sep 06, 2017 11:41 pm

does the cutter head physically move up and down a lot while cutting?
making lathe cuts on a Presto 6N, HIFI stereo cuts on vinylrecorder
at Audio Geography Studios, Providence, RI USA
http://www.audiogeography.com

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kafkablues
Posts: 48
Joined: Mon Feb 22, 2016 7:13 am

Re: Sound fluctuations from cutter head

Post: # 47779Unread post kafkablues
Fri Sep 08, 2017 11:31 am

IMG_0545.JPG
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Think I may have an idea. Seems to be a ever so slight difference in the level between the inside of the platter and outside. So small you wouldn't notice with the naked eye. See photos. Up until now I've been cutting only 7" and this problem (if it is indeed a problem) has only occurred during cutting 12". The volume does seem to increase around where the 7" starts. I have included a picture of platter. Any suggestions/theories?
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tragwag
Posts: 1260
Joined: Wed Jun 22, 2011 2:30 pm
Location: Providence, RI USA
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Re: Sound fluctuations from cutter head

Post: # 47792Unread post tragwag
Sun Sep 10, 2017 5:12 pm

That could be it! Search the term 'platter runout'
making lathe cuts on a Presto 6N, HIFI stereo cuts on vinylrecorder
at Audio Geography Studios, Providence, RI USA
http://www.audiogeography.com

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