Joining with the Pro Joiner F300-2
The clamp moves up and down for an adjustable height relative to the base of the joiner. Lock the clamp at a level that’s easy to work with using the “clamp locking lever” (Figure J‑1).
Select two moulding sections to join. Unless the frame is square-shaped, this means one section will be longer than the other. Plan on putting the longer section on the right and shorter section on the left when you place them in the clamp.
Before putting the sections in the clamp you may wish to mark the edge of each miter with a stain pencil to disguise any gap at the joint and render the seam inconspicuous. Glue the sections before clamping. The corners of frames joined by V-nails are typically reinforced with wood glue. Place a small bead of wood glue on the miter face of one section and spread it evenly. Place the two sections of moulding face up in the clamp. Bring the two miters into contact with each other. Press the spring button and slide the clamp jaw forward, trapping the two sections (Figure J‑2).
It’s important to align the joint properly in the clamp. Loosen the clamp slightly and adjust the sections so the top corner of the joint is square (Figure J‑3). Then re-tighten the clamp firmly.
Adjust the position of the V-nails. First, measure the width of the moulding using the “set block scale” on the clamp (Figure J‑4).
Next, working from the measurement determined on the “set block scale”, adjust the V‑nail blocks on the cartridge to that measurement (Figure J‑5). Do not load the V-nails yet. First, you must adjust the range of the press.
To adjust the range of the press, release the clamp locking screw and adjust the foot screw until the foot contacts the face of the moulding (Figure J‑6).
Slide the V-nail block cartridge (without the V-nails loaded) between the guides. Slide it back until it stops (Figure J‑7).
Lower the lever arm and make minor adjustments to the foot level by turning the foot screw (Figure J‑8). Keep adjusting until the moulding bottoms out on the V-nail blocks when the lever arm is fully lowered. You will feel the lever arm notch and lock as it bottoms out. The range of the press is now adjusted and you are ready to load the V-nails.
Raise the lever arm and remove the V‑nail block cartridge. Load the V-nails onto the blocks. Make sure the sharp edge of each V-nail is up. It’s important that the V-nail is driven with the cutting edge against the wood. Driving a V-nail upside down will cause it to jam and crumple. Small diagrams on the blocks will show you the proper arrangement of the V-nails on the pins (Figure J‑9).