The Record Number 6 is often called “the best vise ever made.” To put that claim to the test, we’ve been comparing it to the Fireball Hardtail 510.
Today, we’ll be looking at the static jaw. The fixed portion of the vise that holds the dynamic jaw in place and absorbs clamping forces.
The Record Number 6 Static Jaw Design:
It has a large front chin that helps support the dynamic jaw under clamping pressure and to stay in aligned with the static jaw.
The chin also houses the nut that holds the screw.
The Record Number 6 is manufactured as-cast to reduce machining costs, which introduces slop in the fitment.
The dovetail section is prone to break when applying heavy forces to the jaws. The screw can also become misaligned with the nut during operation due to the dovetail joint fitment being loose.
The Record Number 6 vise does not have a dedicated anvil surface. Because of this, users often strike the back of the slide, which can damage the vise.
Fireball Hardtail 510 Static Jaw Design:
The extended front chin on the Fireball Hardtail 510 adds support several inches out from the jaw face.
The fully machined pads on the top, sides, back, and bottom are for precise alignment and making sure there is zero roll.
The integrated groove system locks the slide securely in place.
A rectangular slide design allows for a fully boxed-in jaw.
The nut is held from the rear by the Hardtail, which helps maintain correct screw alignment along the centerline. The enclosed design helps keep debris out of the slide, which ensures smooth operation and longevity.
The Fireball Hardtail 510 also features a dedicated anvil surface on the back, so you don’t have to hit the Hardtail part of the vise.
The Record Number Six relies on as-cast features that save cost but sacrifice precision and durability. In contrast, the Fireball Hardtail 510 uses extensive machining, a boxed slide design, and better alignment to deliver greater strength, precision, and longevity.
