Re: [CAD_CAM_EDM_DRO] Re: Waterjet on a cnc knee mill

OK, I'll take you up on the offer of answers to questions:

What sources do you recommend for pumps and nozzles? How long do nozzles
last? Anything special about the ball bearings? Would BBs do?

Tom Harrison

At 10/31/2005 05:38 AM, you wrote:

>Just a couple of comments - I have a waterjet in my shop and while it is an
>incredible technology for many purposes it also has some drawbacks - The
>main one being the large amount of abrasive that needs to be disposed of -
>The automatic abrasive removal system I got with the machine doesn't do the
>job too well and it does tend to spread abrasive grit and spray mist all
>over (I had it in a separate room) -
>
>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 do think that a homebuilt version would be possible and have been doing
>some sketches and doodles with a view to making one for pubication in my
>HOME SHOP MACHINIST articles - But with several other major projects ahead
>of the waterjet it would be at least a couple of years before I can get to
>the waterjet - In the meantime, if anyone wants to experiment with DIY
>waterjet I would be glad to answer questions although I am far from being an
>expert - (Definition - Expert - EX=Has-been - Spurt=Water under pressure)
>
>Roland Friestad
>
>
>
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