Thanks: 0
Needs Pictures: 0
Picture(s) thanks: 0
Results 1 to 9 of 9
-
15th September 2014, 12:02 AM #1New Member
- Join Date
- Jul 2014
- Location
- Australia
- Posts
- 7
Cutting Metal Sheets with Circular Saw
I have an old 2000W Hitachi Circular saw (PSU-9). I need to cut a bunch of metalume corrugated metal sheets. My options are using my tiny little 100mm angle grinder, or somehow make use of the Hitachi beast.
Is it possible and advisable to cut metal sheets with a circular saw, and what kind of cutting disk should I use?
-
15th September 2014 12:02 AM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Posts
- Many
-
15th September 2014, 10:11 AM #2Try not to be late, but never be early.
- Join Date
- Apr 2011
- Location
- Bakers Hill WA
- Age
- 75
- Posts
- 1,077
Hi Iaan,
I've got a Makita blade for cutting mild sheet steel of max 2mm thickness. Cutting corrugated iron is one of its specified applications. It's No A-86446, is 185mm (71/4") Dia and has 70 carbide tipped teeth. I don't remember where I bought it but the price sticker says $115.00.
Cheers,
Geoff.
-
15th September 2014, 10:30 AM #3GOLD MEMBER
- Join Date
- Jun 2003
- Location
- Sunbury, Vic
- Age
- 84
- Posts
- 2,719
Many years ago my father-in-law cut galvanised iron sheets with a special blade in a monster B & D circular saw. From memory the blade had "square" teeth and literally burnt through the iron. I think your saw needs to have a metal guard, not plastic, over the blade as the 'chips' are red hot as they come off the iron.
Hope that makes sense and is of some help.Tom
"It's good enough" is low aim
-
15th September 2014, 10:52 AM #4
Roofers usually do it with tin snips when it needs to be done but it can be cut with a power saw. Terrible noisy messy job though. Make sure you sweep the sheets down well afterwards because any swarf remaining will rust and cause rust stains on the sheet. We used to use a regular blade - no tungsten teeth - mounted backwards. Definitely best to buy one of the blades recommended above though
"I don't practice what I preach because I'm not the kind of person I'm preaching to."
-
15th September 2014, 11:40 AM #5GOLD MEMBER
- Join Date
- Aug 2005
- Location
- Queensland
- Posts
- 2,947
Others will advise more but I was told not to cut colourbonded metals with a saw or grinder as the blades generated too much heat which affected the colurbond causing it to recede from the cut exposing the metal to the elements, in other words, it rusted quicker than if it had been cut with snips.
Not sure if the above is totally accurate but it seemed to make sense.
I ended up buying a nibbler, which did the job but was noisy and the tiny half moon clippings were a pain to pick up. Thankfully I have a large magnet which I swung on a cord.
-
15th September 2014, 11:57 AM #6
Years ago when I was working at Wreckair the shed hire dept tradies used a panel cutting saw blade similar to this.....they called it a beta blade, from memory....
http://www.austsaw.com.au/products/panel-cutters
might help??
-
15th September 2014, 12:24 PM #7
I have heard something similar but it could be urban myth. I know that grinders and saws were banned from the handful of roofs I've ever worked on because of the swarf. Sheet roofing is very easy to cut with snips and can be done in situ, like when cutting valleys, with minimal fuss. I've been using a lot of corro around here on various sheds and fencing and I always cut it with the 14" Gilbows. For rough rip-cuts, I use a bit of fencing wire tied to a lump of sleeper which you pull up through the tin.
There are a couple of types of nibbler: the shear type and the punch type, which it sounds like you have got. I have one of them too and they are great for cutting sheet, especially if the lines are not straight. They are a bit messy and noisy but I would choose them over a saw or grinder any day. Shears leave no swarf but they are a bit less manoeuvrable."I don't practice what I preach because I'm not the kind of person I'm preaching to."
-
15th September 2014, 10:22 PM #8New Member
- Join Date
- Jul 2014
- Location
- Australia
- Posts
- 7
Thanks all for your suggestions.
I just had a look at what's available at Masters... The conventional option would be to buy a carbide steel circular saw blade for cutting iron based metals, such as a this:
https://www.masters.com.au/product/9...lade-48t-230mm
$100 is more than I paid for the circular saw in the first place though.
How about simply using a standard frictional cutting disc like this?
https://www.masters.com.au/product/9...230x25-4x2-8mm
Have anyone used these in a handheld circular saw?
I should mention that the old Hitachi PSU-9 is pretty solid with covers and protector plates etc all being metal.
-
16th September 2014, 09:53 AM #9"I don't practice what I preach because I'm not the kind of person I'm preaching to."
Similar Threads
-
Jig for cutting sheets with a handheld saw or router.
By Cliff Rogers in forum HOMEMADE TOOLS AND JIGS ETC.Replies: 9Last Post: 21st August 2018, 10:08 PM -
What's the best tool for cutting plywood sheets?
By billygoatkaraok in forum WOODWORK - GENERALReplies: 9Last Post: 17th April 2011, 11:54 AM -
Cutting Rectangle sheets for Go Boards.
By kurokaze204 in forum TOY MAKINGReplies: 7Last Post: 15th November 2010, 08:39 AM -
Circular saw for ply/mdf sheets - which one?
By mcarthur in forum HAND TOOLS - POWEREDReplies: 13Last Post: 26th June 2007, 12:27 PM -
Cutting 8'X 4' Sheets on the MaxiTableETA300
By BarryBurgess in forum TRITON / GMCReplies: 6Last Post: 5th June 2005, 06:41 PM