thatsnowinnebago
thatsnowinnebago GRM+ Memberand Dork
2/24/14 1:35 p.m.

Hey all,

I need a good way to put a 3/16" to 1/4" slit in PVC. We're currently using a normal circular saw but the kerf isn't wide enough and it isn't the easiest. We're thinking dado blades, routers, or a dremel. There's some concern with the pipes getting ruined with an aggressive dado blade.

We're using the thinner wall pipes, no schedule 40. Any ideas?

turboswede
turboswede GRM+ Memberand UltimaDork
2/24/14 1:44 p.m.

Soldering iron aka hotknife? (do it outside with a respirator please)

RossD
RossD PowerDork
2/24/14 1:45 p.m.

How about cutting with heat/electrical resistance i.e. hot wire but use some heavy formed wire in the shape of the slot. Or just heat up a big piece of flat bar steel.

slefain
slefain UltraDork
2/24/14 2:08 p.m.

Table saw with a few fine tooth saw blades stacked together?

turboswede
turboswede GRM+ Memberand UltimaDork
2/24/14 2:15 p.m.

cutoff wheel with blades stacked might work too.

Derick Freese
Derick Freese UltraDork
2/24/14 5:38 p.m.

PVC is under a lot of tension. Here is someone splitting it for a speaker enclosure: http://www.parts-express.com/project-gallery-speaker-project-kuze3201-line-array

T.J.
T.J. PowerDork
2/24/14 6:10 p.m.

Cutting PVC pipe in this way is a cheap way to get a lot of clamps.

How long are the PVC pipe sections that you need to slot?

Hal
Hal SuperDork
2/24/14 9:39 p.m.
slefain wrote: Table saw with a few fine tooth saw blades stacked together?

I've done it that way with no problems even with Schedule 40.

thatsnowinnebago
thatsnowinnebago GRM+ Memberand Dork
2/24/14 11:36 p.m.
T.J. wrote: Cutting PVC pipe in this way is a cheap way to get a lot of clamps. How long are the PVC pipe sections that you need to slot?

It's roughly 17". We leave an inch on the end uncut.

thatsnowinnebago
thatsnowinnebago GRM+ Memberand Dork
2/24/14 11:37 p.m.
Hal wrote:
slefain wrote: Table saw with a few fine tooth saw blades stacked together?
I've done it that way with no problems even with Schedule 40.

We just have a circular saw. Is stacking blades on one of those a good way to lose body parts?

fasted58
fasted58 PowerDork
2/24/14 11:45 p.m.

router?

bluej
bluej Dork
2/24/14 11:52 p.m.

Jig setup with plunge router on low speed so it doesn't melt/bugger up the PVC.

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