How to cut ceramic

mobyd · 2nd August 2009, 03:38 AM

I have to mount two EF Johnson Jumbo 4 pin sockets (211/845 type) side by side in a space 4 millimetres less than twice the diameter of the ceramic bases of the sockets. Ideally I'd like to shave 2 mm off each side of each socket (I can bend up the connection tabs). Attacking these with the grinder produced much heat and sod all abrasion. Anyone got any idea how to do this ?.

Cheers
M

dheming · 2nd August 2009, 07:24 AM

You could use a diamond blade similar to these on your grinder. These kind of blades are used to cut floor tiles so they should work for this.

chrish · 2nd August 2009, 09:00 AM

I am sure that you have thought of this but...

If there is not enough space for the sockets, will there be enough room for the valves? Jones recommends separating power valves by 1 1/2 envelope widths or more. If they are to be close, careful attention to the orientation of the anodes will be required such that the minimum amount of heat radiation is transmitted to the neighbouring valve (oriented so narrow edges of anodes are adjacent and that the larger flat faces of anodes not facing each other).

Good luck!

Chris

Zen Mod · 2nd August 2009, 09:02 AM

even if you have uncut bases positioned so tight , you'll need forced cooling - to prevent overheating of any serious tube .

in other words - they're too near

jjman · 3rd August 2009, 12:38 AM

Dremel has some "diamond" impregnated cutoff wheels. I usually find the regular cutoff wheels work better on the dremel but I've never tried to cut ceramic with a dremel.

Only diamond worked for me on ceramic floor tiles.

2nd August 2009, 03:38 AM	#1
mobyd diyAudio Member Join Date: Sep 2004 Location: Auckland	How to cut ceramic I have to mount two EF Johnson Jumbo 4 pin sockets (211/845 type) side by side in a space 4 millimetres less than twice the diameter of the ceramic bases of the sockets. Ideally I'd like to shave 2 mm off each side of each socket (I can bend up the connection tabs). Attacking these with the grinder produced much heat and sod all abrasion. Anyone got any idea how to do this ?. Cheers M

2nd August 2009, 09:02 AM	#4
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	even if you have uncut bases positioned so tight , you'll need forced cooling - to prevent overheating of any serious tube . in other words - they're too near __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery;I'm dumb

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2nd August 2009, 07:24 AM	#2
dheming diyAudio Member Join Date: Jul 2006 Location: Bay Area, CA	You could use a diamond blade similar to these on your grinder. These kind of blades are used to cut floor tiles so they should work for this.

2nd August 2009, 09:00 AM	#3
chrish diyAudio Member Join Date: Oct 2003 Location: Sydney	I am sure that you have thought of this but... If there is not enough space for the sockets, will there be enough room for the valves? Jones recommends separating power valves by 1 1/2 envelope widths or more. If they are to be close, careful attention to the orientation of the anodes will be required such that the minimum amount of heat radiation is transmitted to the neighbouring valve (oriented so narrow edges of anodes are adjacent and that the larger flat faces of anodes not facing each other). Good luck! Chris

3rd August 2009, 12:38 AM	#5
jjman diyAudio Member Join Date: Jan 2009	Dremel has some "diamond" impregnated cutoff wheels. I usually find the regular cutoff wheels work better on the dremel but I've never tried to cut ceramic with a dremel. Only diamond worked for me on ceramic floor tiles.

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