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Force for foam cutting

vrsculptor
 

How much force does it take to cut foam with a CNC router? I've
searched the web but only found references for hot wire cutters. I
would like to get a handle on just how beefy you have to make a foam
router, I suspect a lot less than a wood router. It seems that wire
cutters don't take much beef. Any experience or thoughts?

Roger
Doug Fortune
 

vrsculptor wrote:

How much force does it take to cut foam with a CNC router?
Practically ZERO, its like moving the tool through the air.

To prove it to yourself, grab a dremel (I use a heavier
Sears Die grinder), mount a ballnose bit (I use up to a 1.5" dia),
and take a few manual swipes by hand through a hunk of foam.

I'll bet you can't tell whats air and what is foam!

Doug Fortune


























.
[email protected]
 

At 12:52 AM 10/28/02 -0000, you wrote:
How much force does it take to cut foam with a CNC router?
Not a bit more than it takes to move the table. The foam melts away before
the wire touches it if your heat and feed is right.


I've
searched the web but only found references for hot wire cutters. I
would like to get a handle on just how beefy you have to make a foam
router, I suspect a lot less than a wood router. It seems that wire
cutters don't take much beef. Any experience or thoughts?

Roger



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Les Newell
 

Very little force is needed. We often cut shapes out of 2" foam in one pass
at 4.8 m/min (approx 190ipm) with a 1/2" cutter spinning at 18000 rpm. Dust
extraction is essential otherwise the whole room will have an even coating
of foam dust!
If the cutter is sharp you end up with a finish at least as good as hot
wire.

Les

How much force does it take to cut foam with a CNC router? I've
searched the web but only found references for hot wire cutters. I
would like to get a handle on just how beefy you have to make a foam
router, I suspect a lot less than a wood router. It seems that wire
cutters don't take much beef. Any experience or thoughts?

Roger
galt1x
 

----- Original Message -----
From: "Les Newell" <les@...>
To: <CAD_CAM_EDM_DRO@...>
Sent: Monday, October 28, 2002 12:05 AM
Subject: Re: [CAD_CAM_EDM_DRO] Force for foam cutting


Very little force is needed. We often cut shapes out of 2" foam in one
pass
at 4.8 m/min (approx 190ipm) with a 1/2" cutter spinning at 18000 rpm.
Dust
extraction is essential otherwise the whole room will have an even coating
of foam dust!
If the cutter is sharp you end up with a finish at least as good as hot
wire.

Les


How much force does it take to cut foam with a CNC router? I've
searched the web but only found references for hot wire cutters. I
would like to get a handle on just how beefy you have to make a foam
router, I suspect a lot less than a wood router. It seems that wire
cutters don't take much beef. Any experience or thoughts?

Roger


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FILES:
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Subscribe: CAD_CAM_EDM_DRO-subscribe@...
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List owner: CAD_CAM_EDM_DRO-owner@..., wanliker@...
Moderator: jmelson@... timg@... [Moderator]
URL to this group:

OFF Topic POSTS: General Machining
If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.


I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.

NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
bill
List Mom
List Owner



Your use of Yahoo! Groups is subject to


Alan Marconett KM6VV
 

Hi Roger,

Foam? With an endmill cutter? Probably NOTHING! Foam or wax should be
EASY to cut. As long as you can move the ways, you should have no
resistance! I think I'd shoot for wood, anyway. Never know when you
might want to move up! You haven't said how BIG this router is to be,
or what you're gonna make!

Alan KM6VV

Alan KM6VV

vrsculptor wrote:


How much force does it take to cut foam with a CNC router? I've
searched the web but only found references for hot wire cutters. I
would like to get a handle on just how beefy you have to make a foam
router, I suspect a lot less than a wood router. It seems that wire
cutters don't take much beef. Any experience or thoughts?

Roger

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