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4hv.org :: Forums :: General Chatting
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Post Your Cool Pic Here!

Move Thread LAN_403
Conundrum
Sat Mar 06 2010, 08:58PM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062
How not to drill glass :) fwiw this is a kludge that would make Macgyver throw a hissy fit..

it worked though.

(its for a flat plate vacuum pump experiment)

-A

"Bother" said Pooh, as the LHC quenched AGAIN!!!
1267909122 96 FT6000 Sdc10048

1267909122 96 FT6000 Clipboard01

1267909122 96 FT6000 Clipboard02

1267909122 96 FT6000 Clipboard03
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Hazmatt_(The Underdog)
Sun Mar 07 2010, 10:43PM
Hazmatt_(The Underdog) Registered Member #135 Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
You're going to have to flame polish that hole because any small crack in that glass is the start of a fracture point. After you polish the hole you should anneal the glass too.
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IntraWinding
Sun Mar 07 2010, 11:53PM
IntraWinding Registered Member #2261 Joined: Mon Aug 03 2009, 01:19AM
Location: London, UK
Posts: 581
You could also try grinding it to a fine chip free finish and then preferably polish it, thus avoiding any heat treatment. Wet & Dry paper will do.
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klugesmith
Mon Mar 08 2010, 07:14AM
klugesmith Registered Member #2099 Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716
Early Spring in California
1268032347 2099 FT6000 Dscn0903

1268032347 2099 FT6000 Dscn0906

1268032406 2099 FT6000 Dscn0915
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Renesis
Mon Mar 08 2010, 11:51AM
Renesis Registered Member #2028 Joined: Mon Mar 16 2009, 08:13PM
Location: Norway
Posts: 319
Klugesmith wrote ...

Early Spring in California

How nice, up here it's almost a meter of snow right now.
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MinorityCarrier
Mon Mar 08 2010, 05:50PM
MinorityCarrier Registered Member #2123 Joined: Sat May 16 2009, 03:10AM
Location: Bend, Oregon
Posts: 312
In July-Aug, the same Calif. location will be 104F (40C), 50% humidity, sky brown with smog. And then there's those pesky earthquakes...

Chico was also very pretty in spring, and total hell in summer.
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Conundrum
Sun Mar 21 2010, 04:44PM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062
Fan guts.. btw i have 36 of these (35 now.. lol)

specs 48v, 0.24 amps, 1500+ rpm, 120mm dia.

-A
1269189866 96 FT6000 Fan

1269189866 96 FT6000 Bearings
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Robert2
Thu Mar 25 2010, 12:37AM
Robert2 Registered Member #1773 Joined: Tue Oct 21 2008, 06:56PM
Location: Poland
Posts: 93
My DRSSTC 2th run !

35 1269477401 68 1269477401 56 1269477401
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Hon1nbo
Fri Mar 26 2010, 09:55PM
Hon1nbo Registered Member #902 Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
here is one of my first Large Format photographs,
camera was a rented Horseman 45FA with a Fuji 210mm lens, film is Ektachrome 64 (4x5 inch sheet size and expired in 1990!), image scanned in to a 150MB TIFF file @ 8142x6440 originally (can't post that here lol).

The subject is a flower in my backyard, but I tried to make it a more dramatic image using camera settings, and I think I did a pretty good job for my first time using this film and camera!

I would have more, but the ones that survived the TSA opening my film box have yet to be scanned, and the ones at the lab won't be ready until Monday. (They opened it on accident, as they had no idea what to do with sheet film, but then again I shouldn't assume they'd ask)

-Jimmy
1269640536 902 FT6000 Flower Large Format Basic Edit



EDIT: Whoever responds to this gets to be post number 2000 in the "Post your cool pic here:" thread!!

EDIT #2: I would hate to have to take post number 2000 in this thread, as I have post 1999 - but I get my other 4x5 film sheet scans tomorrow and if no one else takes the legendary post I will!!!
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...
Sun Mar 28 2010, 11:23PM
... Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
My new toy, and it unleashed against a razer blade...

Running4 1269818494 56 FT6000 Burning Razor Small


The resulting hole I cut, and a shot of the cut edge. The spot size for that shot was about 250um, and the power was about 40w quasi-q-switched.
1269818512 56 FT6000 Square Hole Small 1269818512 56 FT6000 Cut Edge Small
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