Minimum Size Arca Clamp to use with L Bracket

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I'm considering purchasing the 3 Legged Thing Roxie L bracket and in common with many L brackets it has a cut out for the screen. Can anyone please advise the minimum size clamp I should purchase to match this bracket to bridge the cut out gap and retain sufficient clamping force. I understand the cut out slot measures 28mm. My initial thinking is 60mm but would appreciate confirmation from any similar L bracket users
 
I'm considering purchasing the 3 Legged Thing Roxie L bracket and in common with many L brackets it has a cut out for the screen. Can anyone please advise the minimum size clamp I should purchase to match this bracket to bridge the cut out gap and retain sufficient clamping force. I understand the cut out slot measures 28mm. My initial thinking is 60mm but would appreciate confirmation from any similar L bracket users
IMO
Perhaps ask 3 Legged Thing for their advice because as you imply you need it big enough to bridge the gap without putting a bending pressure on the open 'free ends' of the design but not so big that it might be too cumbersome ?
 
I had the same dilemma as you with the Roxie bracket. You can actually use a small plate that only clamps onto one side of the bracket. It won’t be as secure imo as a larger one that bridges the gap, but I’ve used it successfully on a small travel tripod head. If you are using like this, it is important that you clamp onto the correct side of the bracket.
The link takes you to 3 legged things instructions for the Roxie bracket that explains this.

 
I had the same dilemma as you with the Roxie bracket. You can actually use a small plate that only clamps onto one side of the bracket. It won’t be as secure imo as a larger one that bridges the gap, but I’ve used it successfully on a small travel tripod head. If you are using like this, it is important that you clamp onto the correct side of the bracket.
The link takes you to 3 legged things instructions for the Roxie bracket that explains this.

Many thanks for sharing this. It's very helpful. I think I'd prefer to go with a larger clamp but helpful to know that a smaller one will work if fitted correctly. I'll probably go with the 60mm clamp as it will give me 16mm each side of the gap
 
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