
| NOTE: A preferred method for cutting the “V” groove is described in Section 3.5.1. Other provisions in this section apply to both methods. |
Successful angular bends require a “V” groove cut completely across panel through liner and core. Refer to Figure 3-2B. These grooves can be made using the following professional or industrial type equipment:
Router with special shaped carbide-tipped bit.
Circular saw with special carbide-tipped blade with profile to provide “V” groove per Figure 3-2B.

Figure 3-2B: Panel With V-Groove
| NOTES: Set blade depth to remove the entire aluminum core and score a 0.015” +/- .005-depth groove in the back of .040” face sheet. The above procedure will minimize cracking of the face coating. Heating the face of the panel to 100ºF ± 10ºF immediately before bending will also minimize coating cracking regardless of the depth of rout. By routing liner side, the Formacore panel can be bent for either an outside corner or inside corner condition as shown in Figure 3-3. |

Figure 3-3: Routed Panel With Angular Bends
Routing of the Formacore panel requires using a router or circular saw in conjunction with edge guides and securely clamping the Formacore panels in-place with face side down. This allows the router or saw to travel across the liner surface of the Formacore panel. A preferred way to achieve a 0.015” depth of routed groove is to gauge off of the 0.040” face of the panel.
The edge of the routed panel can be bent using an aluminum extrusion or similar rigid instrument (see Figure 3-4). Bending the full length of the Formacore panel gives a uniform bend. Long panels may require more than one person.
Panel edges may also be bent using extrusions shorter than the length of the panel or by using hand held clamps. This generally does not produce a truly uniform bend.

Figure 3-4: Grip For Bending Panel
The groove shown in Figures 3-2A & 3-2B provides minimum radius for bending the Formacore panel. When more rounded bends are desired, this requires that a wider groove be cut in the Formacore panels as shown in Figure 3-5. A guide bar is required to obtain a smooth bend radius.

Figure 3-5: Routed Panel With Radius Bends