Ron, I understand you concerns, but this is where engineering knowledge accumulated over last century or so should be of some help. Using strength of materials discipline we should be able to calculate cylinder so it wouldn't explode, with the safety factor of 3 and appropriate pressure relief devices. Alex
R Rogers wrote: > >alex <[EMAIL PROTECTED]> wrote: > >Recently was a discussion re: water jet - as Dave pointed out, X-Y is >not a problem, the problem is a water jet. >In this respect why not to make a pressure cylinder, > >///Low volume for water jet operation but ample volume for an explosion. I see alot >of posters dabbling with the idea of a water jet. I hope everyone realizes the >dangers of dealing with such high pressures. A tiny stream of water without abrasive >even at 10,000 psi is enough to cleanly take off a hand. and that could happen as >easily as a hose rupturing. The pressures required for water jetting are nothing to >play around with. Especially when we talk about containing them in a large vessel >such as an old modified hydraulic cylinder. I'm not trying to thwart anyones >enthusiasm. Just be careful and aware of the potentials of the design. > >A few weeks back I had the notion of building a CNC laser. Until I researched it and >discovered how dangerous it can be. The lightbeam which is invisible could be >reflected off of a workpiece and blind someone or myself permanently. No thanks. Not >to mention the initial expense of a tube powerful enough to cut even thin steel. For >metalcutting in a gantry type machine in the homeshop, for safety's sake we are >limited to plasma or acet/oxy torch. Although, if someone achieves a homemade water >jet capable of cutting steel and after 6 months they still have enough fingers to >type with, I'd love to hear about it. :-) > >Ron > > instead of a high >pressure pump, which could supply necessary pressure of the water jet? >Present hydraulic cylinders can operate up to 10,000 psi, but this >pressure can be increased without hugh cost overruns by increasing wall >thickness and number of seals, number of tie rods. Then the piston can >be driven by several hydraulic cylinders, providing an operation >pressure. An orifice can be located >at the other end of the cylinder. This seems to be not that hard to >implement even at home shop. Just a thought. >Alex > > > > >Addresses: >FAQ: http://www.ktmarketing.com/faq.html >FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/ >Post Messages: [EMAIL PROTECTED] > >Subscribe: [EMAIL PROTECTED] >Unsubscribe: [EMAIL PROTECTED] >List owner: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] >Moderator: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] [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 > > > > > > > > > > > >--------------------------------- >Do you Yahoo!? >vote.yahoo.com - Register online to vote today! > >[Non-text portions of this message have been removed] > > > >Addresses: >FAQ: http://www.ktmarketing.com/faq.html >FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/ >Post Messages: [EMAIL PROTECTED] > >Subscribe: [EMAIL PROTECTED] >Unsubscribe: [EMAIL PROTECTED] >List owner: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] >Moderator: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] [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 > > > > > > > > > > [Non-text portions of this message have been removed] Addresses: FAQ: http://www.ktmarketing.com/faq.html FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/ Post Messages: [EMAIL PROTECTED] Subscribe: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] List owner: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] Moderator: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] [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. 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