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Shotgun casing template

PostPosted: Tue Oct 17, 2017 9:37 pm
by Nathan02
Hi guys, just curious if theres a template around at all that would give me a layout for the casings and where to make my cuts with the holesaw. Cheers!

Re: Shotgun casing template

PostPosted: Tue Oct 17, 2017 10:00 pm
by A&O
As I did a test today cutting a 3/4” hole in some spare copper plate, try not using hole saws. I made a right mess. I tried fast, slow, everywhere in between, light pressur and really leaning on it and what I found happening was the hole saw was chattering and generally making a mess. I wish I had my phone with me to take some photos. The holes ended up closer to 22mm, not round and rough as guts. And that’s using a brand new Milwaukee hi-metal hole saw.

My thoughts are to try with a step drill bit. What does everyone else use??

Re: Shotgun casing template

PostPosted: Tue Oct 17, 2017 11:02 pm
by hillzabilly
You could try pushing a piece of wood thats a snug fit into the tube,holds the pilot drill bit steady wilst drilling with hole saws.For plate clamp it down to a piece of scrap wood should help and a little cutting fluid or trefalex may make it easier.cheers hillzabilly ;-)

Re: Shotgun casing template

PostPosted: Tue Oct 17, 2017 11:23 pm
by A&O
Thanks Hillzabilly for the words of wisdom, will be given bing it a go tomorrow. Cheers.

Re: Shotgun casing template

PostPosted: Wed Oct 18, 2017 6:26 am
by Zak Griffin
Try using a step drill mate, hole saws are a pain in the arse with copper...

Re: Shotgun casing template

PostPosted: Wed Oct 18, 2017 9:23 am
by Nathan02
A quick question, i flare my condenser tube for easy flange solder the flange then slide my condender pipes that ive already soldered into the casing plates then solder in flush with the flange?

Re: Shotgun casing template

PostPosted: Wed Oct 18, 2017 9:29 am
by Zak Griffin
Something like that :handgestures-thumbupleft:

Re: Shotgun casing template

PostPosted: Wed Oct 18, 2017 9:30 am
by woodduck
Have a read of this one

viewtopic.php?f=41&t=3087

Re: Shotgun casing template

PostPosted: Wed Oct 18, 2017 10:19 am
by Nathan02
Yep just saw that mate..doh! Cheers