-

Jump to content



Photo

What kind of router bit do I use to cut caps for sonotube?


This topic has been archived. This means that you cannot reply to this topic.
8 replies to this topic

#1 of 9 OFFLINE   HungLe

HungLe

    Agent

  • 38 posts
  • Join Date: Oct 18 2002

Posted December 16 2002 - 04:45 PM

Hi,

I am building the Adire Aligntment sub. I cant find the upward spiral twist bit at Home Depot, the guy told me it is not very common. What other router bit can I use to cut?

Also how do I get the edge smooth and nice looking? Thanks!

#2 of 9 OFFLINE   Brian Fellmeth

Brian Fellmeth

    Supporting Actor

  • 792 posts
  • Join Date: Jul 30 2000

Posted December 16 2002 - 05:31 PM

You can use a straight 1/4 inch bit. The caps should be cut with a circle jig to come out smooth and nice.

#3 of 9 OFFLINE   HungLe

HungLe

    Agent

  • 38 posts
  • Join Date: Oct 18 2002

Posted December 16 2002 - 05:48 PM

i mean like round the edge smooth. Should i sand by hand? i am afraid its gonna be uneven.

#4 of 9 OFFLINE   Hank Frankenberg

Hank Frankenberg

    Screenwriter

  • 2,573 posts
  • Join Date: Oct 13 1998

Posted December 17 2002 - 12:02 AM

Here's the source I use for router bits: MLCS. They have the solid carbide spiral upcut bits:
http://www.mlcswoodw......tml#Anchor 1

You can use a round-over bit to round over one edge:
http://www.mlcswoodw..../bt_rndvr.html

You can use a bull-nose bit to round over top and bottom edges at once:

http://www.mlcswoodw....s/bt_bull.html

#5 of 9 OFFLINE   Jeff Meininger

Jeff Meininger

    Second Unit

  • 481 posts
  • Join Date: Jun 05 2002

Posted December 17 2002 - 12:23 AM

You can also use a spiral downcut bit. That's what I used for my sub (Hank: is that correct?). I think the spiral upcut will remove sawdust from the groove more effectively and the spiral downcut will make a smoother cut through veneer. I just cleaned the dust out of the groove with a brush... no problem.

#6 of 9 OFFLINE   Hank Frankenberg

Hank Frankenberg

    Screenwriter

  • 2,573 posts
  • Join Date: Oct 13 1998

Posted December 17 2002 - 05:11 AM

Jeff: Yes, you can use either, but I use spiral upcut and they cut plenty smooth. Upcut action pulls the dust up and tends to pull the router down against your workpiece. I use spiral downcut only when going through veneer, as the cut is shearing downward and cuts the veneer edge very smooth.

#7 of 9 OFFLINE   ChristopherD

ChristopherD

    Stunt Coordinator

  • 106 posts
  • Join Date: Mar 28 2002

Posted December 17 2002 - 06:31 AM

My router accepts 1/2" and 1/4" bits...is one more preferable than the other?

#8 of 9 OFFLINE   Pete Mazz

Pete Mazz

    Supporting Actor

  • 761 posts
  • Join Date: May 17 2000

Posted December 17 2002 - 12:10 PM

I would only buy 1/4" shank for smaller bits. For MDF, 1/2" shanks will not break or vibrate. (Yes, I have broken many a 1/4" bit...not fun!)

Pete

#9 of 9 OFFLINE   HungLe

HungLe

    Agent

  • 38 posts
  • Join Date: Oct 18 2002

Posted December 17 2002 - 03:43 PM

Another question although off topic.

Where can I get the black fabric that goes over my sonotube?