Re: [ATM] Cutting large-diameter PVC

["Norm Prince" <princenorman@bellsouth.net>]

I like to use a "saw guide", or some other form of improvised fence when i 
am trying to cut straight lines with a circ-saw...being as i have yet to 
meet the person who can do it free hand...unfortunately you need a straight 
piece of lumber to make said "saw-guide", or improvised fence, and i always 
use a table saw to obtain that...not to mention they tend to be flat and not 
tube shaped...there is a very bendy form of ply-like lumber that is 
sold...some folks call it bendy-ply...i think its used mostly for curvy 
furniture...its about 3/8" thick...any way you could cut a straight chunk of 
that stuff and bend it around the tube with the appropriate offset for the 
foot of your circ-saw (shazam!...improvised fence) after having marked a 
line with the newsprint procedure i read that was mentioned...unfortunately 
again cutting a straight chunk of the stuff will require more than your 
circ-saw...but maybe you could use the factory edge...just a thought...maybe 
a layer or two of thick (non corugated) cardboard would have the same effect 
if wrapped and tacked to the tube...I will have to agree with Peter on this 
though that its definately not the best choice of tool for the job...I think 
a jig saw would be worse though....a very well squared and large miter saw 
is what i would try first...it will take two or more cuts, but you can use 
the first cut to align the saw after you rotate the tube...once you get one 
side square to your liking, cutting the other side is a breeze...just set up 
a stop block on the run off table and cut away.

best of luck
Norm Prince
(bad ATMer...good carpenter)


----- Original Message ----- 
From: "Kevin MIchael Zabbo" <chaosopher23@yahoo.com>
To: <atm@atmlist.net>
Sent: Friday, October 19, 2007 08:37 AM
Subject: [ATM] Cutting large-diameter PVC


>I have acquired, for free, two lengths of 10" PVC
> pipe.  One look at them and free may have been too
> high a price, but there is enough pipe to make the
> tube for my 8" Newtonian, as long as I tie the tubes
> together.  That part has been figured out.  However -
> (don't ya love this part of the emails?)
>
> The tubes themselves have badly out-of-square ends.
> While I have experience cutting large diameter stuff,
> I do not have access to much more than a circular saw,
> which does a wonderfully fast job at cutting PVC with
> a nice, sharp fine-tooth blade.  While not a smooth
> finish, it is fast and clean enough to rasp away.
>
> Is there an easy way to cut this stuff square, so I
> don't spend a whole day rasping away at it to get it
> to within the 1mm squareness that's good enough for a
> telescope?  Remember now, a circular saw is what I'm
> going to use.  I'm too lazy to go at it with some sort
> of hand saw.
>
> Many thanks,
> Transplanted Yankee, Seeker of the Darkness
> Kevin
>
> I published my first novel!  You can get it here, from the publisher!
> http://www.publishamerica.com/greetingcardpro/pickup.asp?CardSentID=126045&rID=48283
>
>
>
> Their search stringbox is on the right side about halfway down.
>
> search using my name:  kevin michael zabbo
> and it will take you right to my book page.
>
> The title is anna's blood, which also takes you there.
>
> Please order your copy soon!  I love you!
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam?  Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 


_______________________________________________
ATM mailing list http://www.atmlist.net/