View Full Version : Making a dry ice tube that doesn't SUCK
afireinside
05-07-2005, 12:49 PM
Ok my first attempt was a 1/2" thick piece of copper with a 1' long 2" wide copper pipe brazed on. It doesn't hold load AT ALL. Is 1/2" base the ideal thickness or should I go thinner? Is drilling a ton of dimples in it a good idea for heat transfer or no? Where can I get some 3" or wider copper tube? Is that the size I should use? 2" deffinatly seems lacking...
http://www.xtremesystems.org/forums/showpost.php?p=786042&postcount=18
make a container thats minimum 30cm high:)
and 2" 1/8 wide
afireinside
05-07-2005, 04:03 PM
2 and 1/8" wide tube? Thats hardly any larger than the one I have now with the same thickness plate and its horrible...
mine first doesn't suck.
40cm high 2" 1/8 wide
base => 1cm thick 6cm wide and 10 long
the other containers are not tested yet
LostInSpace278
05-08-2005, 02:42 AM
When you start using anything larger than 2'' you run into the problem of mounting. 2 1/8'' tubing is the O.D. not the inside. I.D. will be about 2''. Drilling dimples does work, just like causing a swirling effect with air works better than straight line. the dimples give you more surface area and allows the solution to pool closer to the chip.
afireinside
05-08-2005, 09:23 AM
Yeah but will it SIGNIFIGANTLY increse ability to hold load? My current tube doesn't at all. 3" wide pipe on 3.5" square 1/2" thick plate with dimples all over it and use a universal mount. Sounds good?
yes it sounds good, i don't understand it cant hold the load :s
afireinside
05-08-2005, 05:01 PM
Well I was talking to evilspork this morning (ok it was more like afternoon but I wake up at 1PM so thats the morning to me :p: ) and he said less surface area=better. It makes no sense but seems logical at the same time :lol: I started cutting the excess copper off my tube but its a pain in the arse with a hack saw... I got tired half way through. Will finish tomorrow. I'm also going to drill some holes in the base and lap the base better.