RE: [CAD_CAM_EDM_DRO] Re: Waterjet on a cnc knee mill - water pump ?

Dave,
There are ways of cutting soft stuff on water jets. They have been used in
the food industry extensively for years. When you see those perfectly-cut
cake slices, individually sectioned in wax paper, they have been likely cut
on a water jet. What they do, and what you might try, is to freeze the soft
material and promptly cut it. The freezing action stiffens it quite a bit.

Andrey

-----Original Message-----
From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of turbulatordude
Sent: Wednesday, October 05, 2005 2:56 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: Waterjet on a cnc knee mill - water pump ?

> Regarding the use of 20,000 psi, it would work ok but be quite a bit

slower

> based on my tests at different pressures - I cut various materials,
> aluminum, steel (up to 2" thick), glass, marble, granite, ceramics and
> plastic - I also did some serious experimentation on cutting balsa and
> plywood for model airplane kits which does a really nice job because

there

> is no edge burning as with lasers -

I need to cut some hundred or so gaskets of foam rubber.

I think it is 1/4" or so and was wondering if a water only pump could
do the trick ?

Also, since the stuff is pretty soft, just how low of a pressure could
do the job ?

And, the real question, is where can one find a low volume, high
pressure pump for water for such a unit ?

I t looks like common hyraulic house in small diamters can handle
5,000 PSI or slighly more.

And, then of course, what diameter nozzle would fit the bill ?

McMaster has orifices rated for 5,000 PSI and are 0.016" dia for the
small one.

And then of course, with these pressures, will the orifice wear out ?

Dave






Addresses:
FAQ: http://www.ktmarketing.com/faq.html
FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com

Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
timg@...
Moderator: pentam@... indigo_red@... davemucha@...
[Moderators]
URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO

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.
http://www.metalworking.com/news_servers.html

http://groups.yahoo.com/group/jobshophomeshop 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


Yahoo! Groups Links