Hi Mark, Pairing up the vent holes is trick from the 1960's. The example shown is not the cleanest. A well done unit looks almost "factory". 73 & Good morning, Marv WC6W -- "Mark Beckwith" wrote: > Anybody got any other alternatives for 4-1000 > chimneys besides 1 gallon pickle jars ? I just bought a homebrew deck that used a modern day coffee decanter pot (i.e. "Mr. Coffee" et al) with the bottom cut out of it, plus some aluminum sheet for the chimney. I'll try and take a photo of it. Pretty whacky. Then today on eBay I saw what's described as a "broadcast pull" but take a look at the tube - the cooling holes in the metal base have been modified. Is this a common mod? Obviously someone thought they'd get more air through the tube perhaps. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5795994946&ssPageName=ADME:B:SS:US:1 ? Mark, N5OT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps ___________________________________________________________________ Try Juno Platinum for Free! Then, only $9.95/month! Unlimited Internet Access with 250MB of Email Storage. Visit http://www.juno.com/value to sign up today!