Hi Brian,
I have a good friend with a good size metal lathe that will be able to produce my smaller viewports that are under 13 inches OD. I'm making him a large custom sandblasting cabinet in trade for him teaching me how to use the metal lathe and his large Drill/Mill properly, and then let me make the parts I need, including a number of other thru hulls. For the larger items I'll have to hire a machine shop like most everyone else, or find some one with a Star Trek type industrial replicator.
I'll likely just drill all the viewport holes with my friends large Drill/Mill machine. This way I can spend the money I would have spent on a large lathe and Drill/Mill on better snow shovels. ;)'
Regards,
Brent
From: ojaivalleybeefarm@dslextreme.com
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Rotary Table for Drilling View Ports and the Like
Date: Sun, 24 Feb 2008 11:12:43 -0800
Brent,
How are you making the viewports?
Brian
Hi Brian,
That sounds like a good plan, but the UPS truck won't be able to drive up my driveway tell spring, so I'll just have to snow shoe to your house to do some drilling. :)' Besides that, I spent my big jar of nickels on new snow shovels, since I keep braking them and they keep raising the prices on the good ones. I think it's time to bring in a D9 bull dozer.
If a person only has a drill press, I was thinking that if they wanted to make the hole drilling on a viewport easier and economical, they could clamp on a 2" X 4" or 2" X 2" wood fence to the drill press table, with a piece coming out from it in a perpendicular fashion. Here is a model of what I'm thinking would work.
http://www.frappr.com/?a=viewphoto&id=4001713&pid=9293149
I'm lucky that on one of my two drill presses I have a large rectangular table with a table saw type fence to assist in this sort of operation.
Cheers,
Brent
From: ojaivalleybeefarm@dslextreme.com
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Rotary Table for Drilling View Ports and the Like
Date: Sat, 23 Feb 2008 07:05:17 -0800
Brent,
Get yourself a milling machine ! I just aquired a nice Bridgeport last summer, the machining handbook gives you the formula for drilling holes around a circle, once you have tthe diameter and the number of holes you want it's real easy, some of the digital readouts have it in their program.
Brian
James,
It looks like you could of used a rotary table on your drill press like this one I'm planning on acquiring, to make the drilling of your viewports a lot easier.
http://www.grizzly.com/products/g9299
I'm also considering aquiring this XY Cross table for my drill press, until I can upgrade to a large Mill/Drill.
http://www.grizzly.com/products/h7659
Regards,
Brent Hartwig
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