Plywood splitting

**beer is good** · 25th February 2010, 02:42 PM

I have just cut some 18mm plywood (I think it is 9 ply) to make some shelves for the shed on my old saw bench with a recently sharpened blade. On the underside there was a fair bit of tear out and splitting. Is there a way of avoiding this? i tried lowering the blade on the last piece and that seemed to help but was still unacceptable.

**elanjacobs** · 25th February 2010, 07:07 PM

You could try making a new insert around the blade from wood. Cut it to fit the hole in the table, put it in with the blade fully lowered, turn on and slowly raise the blade. This will provide support to the material being cut right up to the edge of the cut.

**Bob38S** · 25th February 2010, 08:02 PM

Tape the cut line with a good masking/sticky tape and roll smooth, then cut.

Ensure that your fence is in fact parallel to the blade so that the blade is cutting rather than cutting and being skewed due to a fence that is not parallel.

If all else fails then do a partial cut on the underside first then a full cut through the ply - basically works like a scoring cut on a large panel saw.

A new insert would also certainly help.

Hope it helps. regards,
Bob

**DJ’s Timber** · 25th February 2010, 09:00 PM

This was covered recently in this thread

Thread: Plywood splitting

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