Replies

1. 
   Dave45 | Feb 18, 2005 01:47am | #1

   How much are you trying to plane off with each pass?  You may be trying for more than it can 'grip' when the board hits the feed rollers.

1. 
   JMartinsky | Feb 18, 2005 02:25am | #2

   I was only taking 1/8" or so out of some MDF.

1. 
   Bouboubomber | Feb 18, 2005 03:22am | #3

   I wouldnt plane MDF! you will wear the knives about 10 times fster than if it was wood

1. 
   Tao | Feb 18, 2005 05:45am | #4

    

   I wouldnt plane MDF! you will wear the knives about 10 times fster than if it was wood

   Also, most MDF is denser near the surface than in the center.  Planing the surface reduces its integrity.  And yes, it definitely will very quickly dull HSS knives.

1. 
   JMartinsky | Feb 18, 2005 05:59am | #5

   I know, I know! I don't make a practice of planing MDF or even working with it. It was a special circumstance and couldn't be helped. I am used to a Makita bench-top so I don't know if the feeding is really that different, or do I need to adjust something. Thanks!John

2. 
   Dave45 | Feb 19, 2005 07:37pm | #7

   MDF!!??  Omigod!  Sure glad it isn't my planer. - lol

   Yeah, 1/8" is too big of a 'bite' for any wood.  I try to keep it at 1/16" or less and make multiple passes if I need to.

2. 
   hammer1 | Feb 18, 2005 07:38am | #6

   1/8" is too much, reduce it to 1/16". I sure am glad you're not using my planer with MDF. You'll owe your friend a knife sharpening and a thorough cleaning.

   Beat it to fit / Paint it to match