Thread: Question re table saws...

The scoring blade is the smaller blade is in the foreground of the picture below.



The objective of these blades is to reduce/eliminate the amount of ugly chipping on laminated/veneered panels.

I'm not sure in which direction the scorer rotates (presumably in the opposite direction to the main blade) or how it prevents chipping on the upward facing side of the material being cut. Perhaps someone else could explain...

Andrew thanks for the pic - much clearer now.

I think by the look of things one would need to feed laminated/veneered panels face down and it also look as though the scoring wheel does rotate in the opposite direction to the saw blade.

Thanks again for the pic - is it of your machine?

Allan.

is it of your machine?

I wish! I'm still saving up for a combination machine (Minimax CU300) with scoring unit - hopefully next year...

Regards

It's the downward movement of the main blade as it exits the cut that causes the chipping. There's nothing to support the melamine so it fractures as the teeth exit through the bottom of the board.

With the scoring blade, the direction is reversed and the cut starts with the blade moving upwards into the board. This combined with the sharp angle of the teeth because of the low height, prevents the melamine from chipping. It only cuts to a depth of a few millimetres then the main blad cuts the rest of the way through.

If it's set up properly, you should get a clean cut on both sides of the sheet.

It's the downward movement of the main blade as it exits the cut that causes the chipping. There's nothing to support the melamine so it fractures as the teeth exit through the bottom of the board.

I thought so, but wasn't 100% sure.