What this is
A specialty clamp built specifically to prevent bowing during panel glue-ups — a different problem than the edge-to-edge squeeze of the bar and parallel clamps elsewhere on this site. Two rigid steel cauls sandwich the panel from top and bottom, connected by scissor-action couplers that apply pressure from all four sides simultaneously. The pitch: no need to stagger clamps top and bottom to fight bowing, because the cauls themselves hold the panel flat while the glue cures.
Full specs
| Spec | Value |
|---|---|
| Stock thickness capacity | 3/4" to 3" |
| Maximum panel width | 10" to 36" |
| Rail dimensions | 1.78" wide x 1.92" high x 42" long |
| Material | Steel, 1.8mm-thick rails, powder-coat finish; zinc-coated Acme-threaded rod |
| Weight | 15.90 lb |
| Package contents | 1 set of clamp rails, 1 headstock with handle, 1 tailstock, 2 clamp feet |
| ASIN | B0BSVLVW7H |
Source: rockler.com’s own product page — manufacturer-published, not a retailer listing.
Rockler Deluxe Panel Clamp (Single)
Sandwiches the panel between two rigid steel cauls with scissor-action couplers for genuine 4-way pressure — squeezes the joint and holds the panel flat in one step, rather than relying on staggered top/bottom clamps to fight bowing.
View Price on AmazonWho this is for
Tabletops, wide door panels, and thick benchtops where flatness during cure matters as much as joint pressure — this is purpose-built to eliminate the bowing that staggered bar or parallel clamps only partially control.
Who this isn’t for
Narrower or thinner stock outside the 3/4"–3" thickness and 10"–36" width range — it’s not adjustable beyond those limits. For standard edge-joining within a parallel clamp’s reach, see our parallel clamps comparison instead — a simpler, lighter tool for glue-ups that don’t need anti-bow cauls.
Bottom line
Manufacturer-sourced specs, not a hands-on test — we haven’t measured actual flatness on a real glue-up. On paper this solves a specific problem (panel bowing during cure) that no other clamp on this site is built around. Rockler Deluxe Panel Clamp if flatness on a wide panel glue-up is your main concern.
Working smaller — cutting boards or panels under 16" wide? See the Rockler Mini Deluxe Panel Clamps (2-Pack) — the same 4-way pressure concept at a smaller scale.