Need advice on plunge router cutting on 3\16" masonite hardboard - Router Forums
 
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post #1 of 4 (permalink) Old 05-26-2010, 07:54 PM Thread Starter
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Default Need advice on plunge router cutting on 3\16" masonite hardboard

Hi, Iím really a noob when it comes to knowing all there is to about routing. I just know how to do my specific task but donít know why I started getting this particular problem. I frequently cut out shapes on 3/16Ē masonite board (squares, circles, hearts) Iíve only been doing it for a couple months and I use a makita 3612 plunge router with a Freud1/4-Inch Diameter 2-Flute Down Spiral bit.

Now I ussually route over a spoil board and clamp the masonite down. I ussually will cut out everything in one pass. Lately Iíve been noticing that the cuts arenít coming out as clean in the sense there is this papery residue left around the edges which I have to scrub off with a towel. (I canít sand it because I need the surface of the masonite to stay smooth)

My question is, is it time to replace my bit already? Iíve only had it for 2 and half months and I paid 20 bucks for that thing. Or maybe its the masonite Iím buying, or is it just my technique of cutting? Any pointers? I just noticed it happening recently.
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post #2 of 4 (permalink) Old 05-26-2010, 09:19 PM
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Originally Posted by rog2e View Post
Hi, Iím really a noob when it comes to knowing all there is to about routing. I just know how to do my specific task but donít know why I started getting this particular problem. I frequently cut out shapes on 3/16Ē masonite board (squares, circles, hearts) Iíve only been doing it for a couple months and I use a makita 3612 plunge router with a Freud1/4-Inch Diameter 2-Flute Down Spiral bit.

Now I ussually route over a spoil board and clamp the masonite down. I ussually will cut out everything in one pass. Lately Iíve been noticing that the cuts arenít coming out as clean in the sense there is this papery residue left around the edges which I have to scrub off with a towel. (I canít sand it because I need the surface of the masonite to stay smooth)

My question is, is it time to replace my bit already? Iíve only had it for 2 and half months and I paid 20 bucks for that thing. Or maybe its the masonite Iím buying, or is it just my technique of cutting? Any pointers? I just noticed it happening recently.
Hi rog - welcome to the forum
An unfortunate fact of life is that man made products; ie, hardboard, MDF, plywood, etc, are tough on router bits. The resins and such they put in the glue to bind it together. As the problem just recently arose, the logical conclusion is the bit has become dull. If you are not particularly interest in "exactly" a 1/4" kerf, you may look into having the bits resharpened. Resharpening will reduce the diameter slightly. Another suggestion would be to look for less expensive bits while keeping with carbide. Here is a source with a bit better price on quality bits:
MLCS solid carbide router bits
I suggest you stick with solid carbide bits though as I don't believe HSS would last more you than a week.

John Schaben

The problem with experience is I usually get it immediately after I need it.
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post #3 of 4 (permalink) Old 05-26-2010, 09:42 PM Thread Starter
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Thanks for the advice. I will check out that site. Someone also mentioned to me to use a Diamond hone but I don't know if I have the skill to do that myself.
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post #4 of 4 (permalink) Old 05-26-2010, 09:50 PM
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Hi Rog, and welcome to the RouterForums. Our membership is now inhanced by one.




Dave
the "Doctor"

In woodworking there is no scrap, only firewood.



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