Powermatic HPS67 operating instructions Operation, Square Cut, Scoring Blade

Models: HPS67

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Square Cut

1.Take a panel approximately 40" and cut five times round, always turning the cut edge up against the crosscut fence (counter- clockwise with crosscut fence in normal position). The fifth cut cuts the same edge as the first.

2.The last offcut strip (whose left side was the last cut and whose right side was the first cut) must be the same width at both ends if every corner was precisely 90 degrees. Any error in the squareness has been multiplied four times.

3.Break the strip and lay the ends side by side and check the difference. (Break the strip in such a way that you know afterward which was front and which was back; e.g. front bit short, back bit long).

Unlike other methods of checking for squareness, this system tells you which way to move the fence should adjustment be necessary. It depends upon the shape of the fifth offcut strip:

If front thick, back thin – move fence counter- clockwise.

If front thin, back thick – move fence clockwise.

1.The crosscut fence position is adjusted at the outer attachment point only. Loosen the clamping device on the bottom of the crosscut fence.

2.Loosen the adjust the cross cut fence bracket on the top surface of the table.

3.Re-tighten the cross cut fence clamp device.

4.Perform another test to check the setting.

NOTE: An incorrect free cut on the sliding table can affect the squaring; see "Free Cut (Blade to Rip Fence)"

Scoring Blade

The scoring blade should penetrate the material about 2mm.

Problems with the alignment of the scoring blade can normally be traced back to too much free cut. For this reason, the free cut must be checked for correctness before the scoring saw is adjusted.

For example, when the main blade is tilted to 45 degrees, the scoring blade may need to be readjusted sideways.

The tilt axis is independent of the free cut on the sliding table rip fence. The scorer alignment at 90 degrees takes the free cut into account.

Thus, the scorer and the main blade are slightly out of alignment with regard to the tilt axis.

As the blades are tilted to 45 degrees, this misalignment in the horizontal plane also becomes a misalignment in the vertical plane.

The scorer must, therefore, be "raised" (moved to the left) or "lowered" (moved to the right) depending on whether the free cut on the sliding table, or the rip fence, needs to be compensated for.

The free cut can influence the scoring cut; it is essential to carry out the first two free-cut tests mentioned above before adjusting the scoring blade.

Operation

The panel saw is designed for the following work and is equipped with safety devices for these particular procedures. It is not designed to work materials such as ferrous or non-ferrous metals.

Available procedures:

Ripping with the parallel saw fence with or without the saw blade tilted and the fence upright or in the low position.

Right-angled or mitre cuts with the 90 degree fence mounted to the sliding table with tilted or vertical saw blade.

Crosscutting workpieces using the adjustable stop on the 90 degree fence.

Cutting panels or solid wood on the sliding table.

The machine has overload protection on both main and scoring motors. Should the motor be shut off by one of these protectors, it is necessary to wait a few minutes until the overload has cooled down before restarting.

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Powermatic HPS67 operating instructions Operation, Square Cut, Scoring Blade