We use waterjet all the time. It is most cost effective on thick materials. Thin steel is better suited for laser cutting.
We cut think stainless, mild steel, aluminum, gaskets, granite, glass, acrylic etc. you name it.
The slower you run it, the smoother the finish, just like most things. The top side of the plate will be larger than the bottom. the waterjet can have a dwell mark at start if operator did not lead-in or use a rampup, but you shouldnt get that if they set up right.. the bigger the pump the better for thicker materials finish. Actually edge looks like tiny cutting torch did it, you can see water path esp. when nozzle starts to get sloppy (large) and needs replace.
It's just like CNC.
DJC Engineering LLC
6533 Old Coach Trail
Washington, MI 48094
(586) 484-3232
----- Original Message ----
From: Brent Hartwig <brenthartwig@hotmail.com>
To: personal_submersibles@psubs.org
Sent: Thursday, August 23, 2007 5:09:46 PM
Subject: RE: [PSUBS-MAILIST] Aqua jet cutting acrylic
Thiijs, Actually from what I've been told by the aqua jet cutting guys I know, it's the other way around. The top of the cut has a wider kerf then the bottom, since the bottom is the last area the water with abrasives cuts, and the upper areas have been dwelled on longer by the abrasives shooting back out of the hole.
Regards,
Brent Hartwig
Date: Thu, 23 Aug 2007 21:29:48 +0200
From: skarholm@gmail.com
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Aqua jet cutting acrylic
At what thickness does this appear ?
On 8/22/07, Thijs Struijs <thijs-struijs@planet.nl> wrote:
Hello,
There is a small problem with aqua jet cutting. It is difficult to explain for me as a Dutchman in English but a water jet (even with abrasive additives) tends to act as a bullet. At the entrance it cuts a small hole, at the other end there is a "big" gab. Cutting thin materials is no problem but as soon as it gets thicker the jet makes a conical hole. When you cut a round viewport you will end up with a slightly connical one. This requires machining afterwards to meet the neccessary tolerances.
Regards,
Thijs Struijs
--
Best Regards
Øystein Skarholm
www.ubat.no