Ercole Cardellini End Jaw Clamp: Safe Studio Rigging Guide

Quick answer

Clamp the Ercole Cardellini End Jaw Clamp onto a surface between 16mm and 200mm thick, tighten the jaw firmly, then attach your light or accessory using the 5/8″ pin or 5/8″ hex receiver. Always test the load by hand before letting go, and never exceed the clamp's rated capacity or the supporting stand's limit.

Why the End Jaw Clamp Belongs in Your Rigging Kit

The Ercole Cardellini End Jaw Clamp is a versatile grip tool that lets you mount lights, flags, or small modifiers almost anywhere there is a solid edge. Its 16–200mm grip range covers everything from thin shelves to thick beams, and the 5/8″ pin and 5/8″ hex receiver give you two mounting options without extra adapters. At 0.85kg, it is heavy enough to feel secure but light enough to carry in a stand bag. Use it when a standard light stand cannot reach the position you need, or when you want to keep floor space clear.

Step 1: Inspect the Clamp and Mounting Surface

Before every rigging job, check the clamp for damage: look for bent jaws, stripped threads on the tightening screw, or a loose pin. Wipe the jaws clean so they can bite properly. Then examine the surface you plan to clamp onto. It must be solid, stable, and thick enough within the 16–200mm range. Avoid clamping onto glass, thin plastic, or anything that could crack under pressure. A common mistake is assuming a surface is strong enough because it feels firm; test it by pushing down firmly with your hand first.

Step 2: Position and Tighten the Clamp

Open the jaws wide enough to slide over the surface, then turn the screw until the jaws contact both sides. Tighten firmly by hand—do not use tools to over-tighten, as this can damage the clamp or the surface. The goal is a secure grip that will not slip when you hang a load. For vertical surfaces, orient the clamp so the 5/8″ pin points upward or sideways as needed, and make sure the hex socket is accessible. A frequent error is leaving the clamp slightly loose; always give it a final firm twist after positioning.

Step 3: Attach Your Equipment Using the 5/8″ Pin or Hex Socket

The 5/8″ pin accepts standard light fixtures, arms, or knuckles with a 5/8″ receiver. Slide the accessory onto the pin and tighten its locking screw. If your accessory uses a hex fitting, insert it into the 5/8″ hex receiver and secure it. For heavier items, consider adding a safety cable around the clamp and the accessory as a backup. Never mount a load that exceeds the clamp's rated capacity or the supporting structure's limit. If you are unsure of the weight, start with the lightest item and test carefully.

Step 4: Test the Load Before Letting Go

Once everything is attached, support the weight with one hand while you gently push and pull the rig in all directions. Watch for any slipping, flexing, or movement in the clamp or the surface. If the clamp shifts, remove the load, re-tighten, and try again. Only release your hand when you are confident the rig is stable. A common mistake is skipping this test, especially when in a hurry—it takes seconds and prevents accidents.

Step 5: Add a Safety Tether for Overhead Use

If you are rigging overhead or in a public space, always add a safety tether. Loop a rated safety cable through the clamp's body and around a separate strong anchor point, then secure it to your light or accessory. This is not a substitute for proper clamping, but it will catch the load if something fails. Check that the tether does not interfere with the clamp's jaws or the mounting surface. For heavy setups, consider using a secondary clamp as a backup anchor.

Step-by-step safe rigging checklist

1. Inspect clamp and surface: Check for damage and ensure the surface is solid and within the 16–200mm grip range. Checkpoint: never clamp onto glass or weak materials.
2. Tighten the clamp firmly: Hand-tighten the screw until the jaws grip securely; do not over-tighten with tools. Checkpoint: give it a final firm twist after positioning.
3. Attach equipment to the 5/8″ pin or hex socket: Slide your light or accessory onto the pin or into the hex receiver and lock it down. Checkpoint: use a safety cable for overhead loads.
4. Test the load: Support the weight and gently push/pull to check for stability before releasing. Checkpoint: if it moves, re-tighten and retest.
5. Add a safety tether: For overhead use, loop a rated safety cable through the clamp and around a separate anchor. Checkpoint: never rely on the clamp alone for overhead rigging.

Product facts

• Ercole Cardellini End Jaw Clamp 32cm with 58″ pin and hex socket: 16–200mm grip range, 5/8″ pin, 5/8″ hex receiver, 0.85kg weight. This wide grip range fits many studio surfaces, and the dual mounting options let you attach a variety of lights and accessories without extra adapters.