Could someone measure these radio center caps please - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**IT Cowboy** · 03-25-2026, 10:28 PM

Could I get someone to measure the metal center of the deluxe radio knobs pictured below using a dial caliper or machinist rule. I think they are .59/15mm but I dont have one on hand - thank you

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**Rust_never_sleeps** · 03-26-2026, 12:53 PM

I'm measuring that metal cap at 20mm

**IT Cowboy** · 03-26-2026, 01:07 PM

Quote:

Originally Posted by Rust_never_sleeps

I'm measuring that metal cap at 20mm

Awesome thank you. I think I have a solution to re-create these knobs

**70STOVEBOLT** · 03-26-2026, 09:45 PM

I’ll sign on to see it.

**Rust_never_sleeps** · 03-26-2026, 10:05 PM

Quote:

Originally Posted by IT Cowboy

Awesome thank you. I think I have a solution to re-create these knobs

Interesting. Easy to print, but not with the metal caps.
I could sink a Fresca cap in one, I suppose ;-)

yuccales · 03-27-2026, 07:54 AM

Quote:

Originally Posted by Rust_never_sleeps

Interesting. Easy to print, but not with the metal caps.
I could sink a Fresca cap in one, I suppose ;-)

Fresca cap a tad to hillbilly. I'd try floor glides. Heat up the prongs, press into the knob, done!

**Steeveedee** · 03-27-2026, 10:05 PM

Quote:

Originally Posted by yuccales

Fresca cap a tad to hillbilly. I'd try floor glides. Heat up the prongs, press into the knob, done!

**IT Cowboy** · 03-28-2026, 01:06 AM

Getting closer

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**IT Cowboy** · 03-29-2026, 09:42 PM

If you can' find it or buy it then make it! A bit of a learning curve but I am getting closer yet.

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**Rust_never_sleeps** · 03-30-2026, 12:18 AM

you'll probably want to reinforce the d-hole. Might get away with just a strip of metal on the flat part
Of course, if it strips out, it's easy enough to print another one

**Rust_never_sleeps** · 03-30-2026, 01:21 PM

Quote:

Originally Posted by yuccales

Fresca cap a tad to hillbilly. I'd try floor glides. Heat up the prongs, press into the knob, done!

Fresca's classy, hillbilly would be PBR ;-)
I do have blank bottle caps for brewing, but they have "ruffled skirts" so not really suitable. I like your solution better

**Rust_never_sleeps** · 03-30-2026, 01:23 PM

Quote:

Originally Posted by IT Cowboy

If you can' find it or buy it then make it! A bit of a learning curve but I am getting closer yet.

Attachment 2445113

Looks like you're one "pull" away from getting that center cylinder to the right length

**IT Cowboy** · 03-30-2026, 01:32 PM

Quote:

Originally Posted by Rust_never_sleeps

Looks like you're one "pull" away from getting that center cylinder to the right length

That is what she said. I used calipers to measure an original so it should be ok. I could have made the back solid but I had fun creating it in Fusion.

**Rust_never_sleeps** · 03-30-2026, 01:39 PM

Quote:

Originally Posted by IT Cowboy

That is what she said. I used calipers to measure an original so it should be ok. I could have made the back solid but I had fun creating it in Fusion.

Fusion is slick once you figure out how the selection works and what assumptions it makes based on that. Until then, it made me weep bitter tears of melancholy

03-25-2026, 10:28 PM	#1
IT Cowboy Senior Member Join Date: Jan 2025 Location: Arizona in a van down by the river Posts: 617	Could someone measure these radio center caps please Could I get someone to measure the metal center of the deluxe radio knobs pictured below using a dial caliper or machinist rule. I think they are .59/15mm but I dont have one on hand - thank you __________________ 1972 C10 Custom Deluxe Highlander 402 Freedom isn't safe, it requires you to take responsibility for your own life, your own safety, and your own success. It carries with it the possibility of failure and the understanding that you're working without out a safety net. If you give the state the responsibility for any of these you also give up the freedom that accompanies the responsibility.

03-26-2026, 12:53 PM	#2
Rust_never_sleeps Senior Member Join Date: Jun 2022 Location: San Ramon,CA Posts: 1,070	Re: Could someone measure these radio center caps please I'm measuring that metal cap at 20mm __________________ 1970 C10 Custom longbed 350/350 “Carburetors are forgiving, timing is not” — Thunderhead289

03-26-2026, 09:45 PM	#4
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 7,062	Re: Could someone measure these radio center caps please I’ll sign on to see it. __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear

03-28-2026, 01:06 AM	#8
IT Cowboy Senior Member Join Date: Jan 2025 Location: Arizona in a van down by the river Posts: 617	Re: Could someone measure these radio center caps please Getting closer __________________ 1972 C10 Custom Deluxe Highlander 402 Freedom isn't safe, it requires you to take responsibility for your own life, your own safety, and your own success. It carries with it the possibility of failure and the understanding that you're working without out a safety net. If you give the state the responsibility for any of these you also give up the freedom that accompanies the responsibility.

03-29-2026, 09:42 PM	#9
IT Cowboy Senior Member Join Date: Jan 2025 Location: Arizona in a van down by the river Posts: 617	Re: Could someone measure these radio center caps please If you can' find it or buy it then make it! A bit of a learning curve but I am getting closer yet. __________________ 1972 C10 Custom Deluxe Highlander 402 Freedom isn't safe, it requires you to take responsibility for your own life, your own safety, and your own success. It carries with it the possibility of failure and the understanding that you're working without out a safety net. If you give the state the responsibility for any of these you also give up the freedom that accompanies the responsibility.

03-30-2026, 12:18 AM	#10
Rust_never_sleeps Senior Member Join Date: Jun 2022 Location: San Ramon,CA Posts: 1,070	Re: Could someone measure these radio center caps please you'll probably want to reinforce the d-hole. Might get away with just a strip of metal on the flat part Of course, if it strips out, it's easy enough to print another one __________________ 1970 C10 Custom longbed 350/350 “Carburetors are forgiving, timing is not” — Thunderhead289

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