Inserts for 3/8" rod in super clamp?

jzucker
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p.1 #1 · p.1 #1 · Inserts for 3/8" rod in super clamp?

I'm trying to use a super clamp to mount a microphone boom arm. The boom arm has a 3/8" rod at the end and the standard super clamp has difficulty getting a good grip on a round rod of that thickness. I'm currently using gaffer's tape around the rod which helps but it's still not a firm grip.

Does anyone make rubber, V-inserts or is there another solution?

Oct 29, 2023 at 08:17 AM

jcolwell
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p.1 #2 · p.1 #2 · Inserts for 3/8" rod in super clamp?

I use stuff like this.

The 'joiner nut' lets me attach a pair of 3/8 threaded rods, or attach a 3/8" threaded rod to a baby stud, as shown in the first image.

Using a hex baby (as shown in the second image) would be better, but mine is the wrong pitch; it's probably metric.

The third image shows the 3/8" threaded rod going straight into a SmallRig clamp. It works gerat for lighter loads.

Gotta go. It's game time. Go Pats!

Baby stud 3/8" to Joiner to 3/8" threaded rod

SM-G975W 4mm f/1.5 1/60s 250 ISO -0.9 EV

Baby stud: Hex end to 3/8" (maybe 9.5mm)

SM-G975W 4mm f/1.5 1/30s 320 ISO -0.9 EV

3. SmallRig clamp

SM-G975W 4mm f/1.5 1/60s 320 ISO -0.9 EV

Oct 29, 2023 at 12:34 PM

jzucker
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p.1 #3 · p.1 #3 · Inserts for 3/8" rod in super clamp?

That doesn't work for me because the rod at the end of the arm is unthreaded and pressed metal. It's not a solid piece

jcolwell wrote:
I use stuff like this.

The 'joiner nut' lets me attach a pair of 3/8 threaded rods, or attach a 3/8" threaded rod to a baby stud, as shown in the first image.

Using a hex baby (as shown in the second image) would be better, but mine is the wrong pitch; it's probably metric.

The third image shows the 3/8" threaded rod going straight into a SmallRig clamp. It works gerat for lighter loads.

Gotta go. It's game time. Go Pats!

Oct 29, 2023 at 06:15 PM

jcolwell
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p.1 #4 · p.1 #4 · Inserts for 3/8" rod in super clamp?

OK. Can you grab sideways, it in the jaws of a super clamp (or SmallRig clamp) ? If so, then a joined-pair of super clamps might do it.

Oct 29, 2023 at 06:48 PM

jzucker
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p.1 #5 · p.1 #5 · Inserts for 3/8" rod in super clamp?

jcolwell wrote:
OK. Can you grab sideways, it in the jaws of a super clamp (or SmallRig clamp) ? If so, then a joined-pair of super clamps might do it.

The problem is that the superclamp needs a bigger diameter to make a good grip. Probably needs 5/8". The diameter of the tube on the arm is 3/8. I slipped a hard rubber sleeve over it which makes it a little better. I'm thinking that a couple of rubber v-inserts would solve the problem.

I'm probably going to order a different arm which has a thicker base but my concern is that I'm then adding a lot of weight to a couple offset arms.

Oct 29, 2023 at 07:13 PM

jcolwell
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p.1 #6 · p.1 #6 · Inserts for 3/8" rod in super clamp?

Yuo cuold grab the rod with a SmallRig clamp, and then grab the SmallRig with a super clamp.

Oct 29, 2023 at 08:14 PM

jzucker
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p.1 #7 · p.1 #7 · Inserts for 3/8" rod in super clamp?

you mean with a double super clamp grabbing the smallrig clamp?

Oct 29, 2023 at 09:41 PM

jcolwell
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p.1 #8 · p.1 #8 · Inserts for 3/8" rod in super clamp?

jzucker wrote:
you mean with a double super clamp grabbing the smallrig clamp?

Yes.

An alternative could be to stick a "Joining Arm" into the superclamp, and then secure the boom's rod along its length. I'd use duct tape and zip ties.

Joining Arm, https://www.bhphotovideo.com/c/product/512965-REG/Manfrotto_133B_133B_Joining_Arm_for.html

Oct 30, 2023 at 06:00 AM


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