On Thursday 19 November 2009, Ian W. Wright wrote: >Gene, > >I think your brain's working too hard!!
:) Probably so Ian. >You probably won't >have much success with Insulin needles as the length of thin >tube will act as a brake on the oil. There seems to be plenty of pressure to make it flow. >One place you can find >really small bore tube is on an old fridge - the thermostat >bulb which is in the frig compartment is usually coupled to >the gubbins in the back with a very small bore copper tube - >its full of alcohol or some such.. A short length of this >glued into a bigger tube would probably serve your purpose. >If you go down this route, I would tap a pointed scriber >into the end of the little tube you are going to stick into >the bigger tube to make a tapered lead in for the fluid. Would that not tend to make a piece of dirt wedge itself in? We may not intend to get dirt in the oil, but Murphy is always looking over my shoulder. >To make a swage for any other tube, use a little centre >drill - I have them down to about 1/8" OD. Put a bit of >steel rod in the lathe chuck and drill a centre drill hole >in it, then hold the tube you want to narrow in the >tailstock, lubricate the centre drilled hole and, with the >lathe running, feed the tube into the hole with pressure >from the tailstock. When you've closed it up too much you >can file the end back a bit till the hole is the right size. I thought of that, but wondered how well the superglue I have the 2nd one assembled with would do when it has that push against it in shear mode, its 1/16" tube about 2" long, with concentric larger tubes glued to it until its large enough for the 0.170" bore of the vinyl hose from the reservoir, which is pressurized at the same pressure as the air nozzle is getting. If I open the valve, I can put 2 oz of Vactra #2 on the work and mill in 2 seconds flat, so the 1/16" OD pipe is still way too big a bore. I do have the center drill that size but didn't think the included would be suitable to swaging brass. Its worth a try though, all I can do is break the glue loose. I believe my dead center might even rest in the hole in the back end of that inside pipe. I'll go try it, thanks Ian. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. <https://www.nrahq.org/nrabonus/accept-membership.asp> Without life, Biology itself would be impossible. ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
