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Faceplate drilling advice
Faceplate drilling advice
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Old 20th March 2019, 08:50 PM   #1
transcendent is offline transcendent
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Default Faceplate drilling advice

Hello,

I have a 10mm thick aluminium faceplate for my preamp. I am struggling to find information on how to properly mount volume, switch, headphone and power switch controls to the frontplate. I would be OK without flushing the front for volume and input switch controls. The problem is that I cannot tighten them to 10mm faceplate as it is too thick to screw them on. I can only afford 3mm thickness to attach it to the plate properly.
Should I counterbore from the outside of the plate to allow nut to go through and tighten the whole thing? I'd need to get ~16mm for larger part of the hole. What tools do you use normally?
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Old 21st March 2019, 04:50 PM   #2
transcendent is offline transcendent
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Anyone?
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Old 21st March 2019, 09:46 PM   #3
phase is offline phase  United States
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Use a mill.
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Old 21st March 2019, 10:34 PM   #4
AVWERK is offline AVWERK  United States
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You can counterbore the backside to any depth you need if I am understanding your need correctly.
A drill press with mill style bits can get you there, but a mill is the more expensive and best way
Now in a pinch you could epoxy your controls to the backside If you cannot get a nut on your controls

Regards
David
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Old 21st March 2019, 10:50 PM   #5
randytsuch is offline randytsuch
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3mm seems pretty thin.

I thought most switches would give quite a bit more than that.

End mill that David suggested seems like a good idea.

I may buy one for my drill press lol

Randy
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Old 21st March 2019, 11:02 PM   #6
grimberg is offline grimberg  United States
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You could also try this one in your drill press. It is adjustable.

Amana Tool 20206 Carbide Tipped Adjustable 27/32-1 D x 5/8 Cut Depth x 1/4-13/32 Inch SHK Counterbore Bit
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Old 21st March 2019, 11:17 PM   #7
evanc is offline evanc  United States
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Faceplate drilling advice
A Forstner bit will cut aluminum. You need to drill a small pilot hole then make a spotface in the back of the panel. A small drill press is nice but a hand drill can work. Be sure to secure the work piece well.

forstner Bits - Grizzly.com
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Last edited by evanc; 21st March 2019 at 11:22 PM.
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Old 22nd March 2019, 12:52 AM   #8
rayma is offline rayma  United States
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Quote:
Originally Posted by transcendent View Post
how to properly mount volume, switch, headphone and power switch controls to the frontplate.
IF you have a sub-panel on your chassis, the face plate could stand off it with spacers.
The controls would then mount on the sub-panel. If some of the shafts of the controls
aren't long enough, shaft extenders could be used.
2/3/4/5/6/7/8mm Aluminum Flexible Shaft Coupling Rigid Coupler Motor Connector | eBay

Otherwise, you could still mount the controls on the sub-panel, and use holes in the
face plate that are large enough to clear the bushings and mounting hardware.
Then attach the face plate directly on the sub-panel. This assumes the knobs are
large enough to cover the clearance holes in the face plate.

Last edited by rayma; 22nd March 2019 at 01:01 AM.
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Old 22nd March 2019, 02:30 AM   #9
phase is offline phase  United States
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You may be able to just drill a hole, and use something like this to pass through the panel and pick up the threads on some of the parts anyways. Should be able to find a power switch that will fit a 10mm panel.

McMaster-Carr
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Old 22nd March 2019, 11:24 AM   #10
transcendent is offline transcendent
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Thank you all for your suggestions.

I have hand drill at home though I am thinking on getting the drill press as it simplifies most of the drilling a lot.

Anyways, since rayma mentioned sub-panel and I don't have one, I was thinking on drilling regular hole to fit the control stick through and on the inside have a small plate (sub-panel) to attach the switch and volume controls. I was also surprised to have only 3mm, I have following rotary switch and stepped attenuator:

Lorlin ck1035

and

DACT Type 21 Stepped Attenuator
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