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10-21-2017, 06:42 PM
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#1
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Guru
City: Sydney
Vessel Name: Sojourn
Vessel Model: Integrity 386
Join Date: Oct 2011
Posts: 13,293
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Sawzall
I need to cut some 1/4-3/8" mild steel plate in a confined area in the lazarette. An angle grinder would do it, but I don`t want the flying metal sparks etc. A hacksaw would take forever,I`m think a Sawzall type tool.Would it do the job?
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BruceK
2005 Integrity 386 "Sojourn"
Sydney Australia
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10-21-2017, 06:48 PM
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#2
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Guru
City: Trenton
Join Date: Apr 2012
Posts: 1,521
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With the right blade.
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Al Johnson
34' Marine Trader
"Angelina"
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10-21-2017, 07:04 PM
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#3
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Senior Member
City: Brisbane
Vessel Name: Malagari
Vessel Model: Island Gypsy 36 Europa
Join Date: Mar 2015
Posts: 422
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Bruce,
That thickness of mild steel is probably at the upper end of its capability but worth a shot. Probably worth having a few spare blades and take it gently
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George
Brisbane
IG 36 Europa
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10-21-2017, 07:11 PM
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#4
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Guru
City: Bellingham WA
Vessel Name: Hatt Trick
Vessel Model: 45' Hatteras Convertible
Join Date: Nov 2016
Posts: 1,971
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Quote:
Originally Posted by Brisyboy
Bruce,
That thickness of mild steel is probably at the upper end of its capability but worth a shot. Probably worth having a few spare blades and take it gently
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What George said. Slow and lots of blade changes. If access is tight, Milwaukee makes a cordless model that's called the Hackzall in their M12 family. I carry one of these on the boat. With lots of blades.
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10-21-2017, 07:12 PM
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#5
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Member
City: Victoria
Join Date: Nov 2016
Posts: 14
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Make sure you clean up carefully. If you miss any steel dust and it gets wet you'll get rust spots.
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Peter
Nordic Tug 32
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10-21-2017, 08:03 PM
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#6
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Guru
City: Tavernier, FL
Vessel Name: Volans
Vessel Model: 2001 PDQ MV 32
Join Date: Jan 2015
Posts: 580
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What Peter said above is important! I hacked up a new grill grate with some expanded metal and was too hungry to clean up. The metal bits rusted overnight and required a polish and buff to get off the gel coat.
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10-21-2017, 08:11 PM
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#7
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Guru
City: Cape May, NJ
Vessel Name: Irish Lady
Vessel Model: Monk 36
Join Date: Dec 2007
Posts: 4,947
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You want a blade where 3 teeth span the thickness of the metal if possible. You may have to saw at an angle to land 3.
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Archie
Irish Lady
1984 Monk 36 Hull #46
Currently in Cape May, NJ
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10-21-2017, 09:26 PM
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#8
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Guru
City: Between Oregon and Alaska
Vessel Name: Charlie Harper
Vessel Model: Wheeler Shipyard 83'
Join Date: Jun 2016
Posts: 3,021
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If you don't have a sawsall, they can be rented or had cheaply at Harbor Freight. I have a Harbor Freight, the best of 3 brands they carried. Mine has seen lots of work. In steel you're well off to buy good blades. Also at Amazon or ebay.
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10-21-2017, 09:53 PM
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#9
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Guru
City: Boston
Vessel Name: Adelante
Vessel Model: IG 30
Join Date: Nov 2016
Posts: 1,608
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Buy lots of metal cutting blades. They wear quickly. Ear and eye protection mandatory.
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10-21-2017, 09:56 PM
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#10
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TF Site Team
City: California Delta
Vessel Name: FlyWright
Vessel Model: 1977 Marshall Californian 34 LRC
Join Date: Apr 2008
Posts: 13,728
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I'd protect from the grinder sparks and use it to cut the plate. A heavy damp canvas could collect and protect from the sparks.
In college, a buddy was hired as an intern by the Aeronautical Technology department to cut a piston and cylinder from an IO-360 aviation engine in half with a hacksaw. It took him weeks but looked fantastic. I don't have that patience.
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10-21-2017, 10:06 PM
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#11
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Senior Member
City: Comox
Vessel Model: 1989 Wellington 57 motorsailer
Join Date: Nov 2016
Posts: 281
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Will work with good quality blades. I would keep the blade lubed with cutting oil.
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10-21-2017, 10:36 PM
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#12
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Guru
City: Philadelphia, PA
Vessel Name: Revel
Vessel Model: 1984 Fu Hwa 39
Join Date: Nov 2015
Posts: 1,024
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Boy! Between a Sawzall and a cutoff wheel in an angle grinder, I'd take the angle grinder any day. Faster! If you can arrange a damp towel or similar, your fears about the hot sparks will be much reduced. (Speaking as a guy with two Sawzalls and three angle grinders...)
Today's fun included wacking mild steel angle iron, 1-1/2 x 1/4", into short lengths with one leg cut shorter on each end. Very quick with an angle grinder; a little trial with a sabre saw was oh, so slow.
Pics of angle grinders at work: 1, my son cutting a fuel tank out of Revel back in July. 2, Me cutting the heating pipes out of the house in 2012.
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10-22-2017, 12:18 AM
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#13
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Guru
City: Sydney
Vessel Name: Sojourn
Vessel Model: Integrity 386
Join Date: Oct 2011
Posts: 13,293
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It`s two cuts about 4" long, twice, to remove 2 fittings. I have a 100mm angle grinder and cutting blades, but no sawzall, clones are readily available here. I have to protect the area in any event,I`ll think about the angle grinder option.
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BruceK
2005 Integrity 386 "Sojourn"
Sydney Australia
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10-22-2017, 06:53 AM
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#14
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Guru
Join Date: Oct 2007
Posts: 22,553
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At a tag sale if you can locate a Sawsall with brushes , a uniiversal style motor , it will operate great in inverter power or smallish noisemaker power.
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10-22-2017, 07:13 AM
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#15
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Senior Member
City: Alexander
Join Date: Aug 2017
Posts: 152
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10-22-2017, 07:14 AM
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#16
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Senior Member
City: Alexander
Join Date: Aug 2017
Posts: 152
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Quote:
Originally Posted by Sugardog
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I'll bet they aren't cheap, but....
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10-22-2017, 07:16 AM
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#17
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Guru
City: Philadelphia, PA
Vessel Name: Revel
Vessel Model: 1984 Fu Hwa 39
Join Date: Nov 2015
Posts: 1,024
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10-22-2017, 09:16 AM
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#18
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Guru
Join Date: Oct 2007
Posts: 1,121
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Consider getting a big magnet to collect up the iron dust/debris
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10-22-2017, 10:20 AM
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#19
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Guru
City: Powell River, BC
Vessel Name: Northern Spy
Vessel Model: Nordic Tug 26
Join Date: Feb 2012
Posts: 4,073
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Quote:
Originally Posted by DHeckrotte
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As well as a facemask, safety glasses and very steady hand...
Walter and SAIT make good discs as well.
I'd go angle grinder myself with some fire blanket, a squirt bottle of water, and an extinguisher nearby.
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10-22-2017, 11:32 AM
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#20
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Guru
City: East Coast
Vessel Name: M/V Maerin (Sold)
Vessel Model: Solo 4303
Join Date: Jun 2013
Posts: 886
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If you're using cheap blades in a Sawzall, you'll be there forever. Use Lenox blades, we typically used 618 blades to cut up oil tanks and piping when I was in the Plbg/htg business. We never used angle grinders, too much mess- the sawzall was bad enough. If you're removing old steam piping, the fittings are usually cast iron, use a 2# hammer on one side of the fitting and back the other side with an 8# sledge. One good swat and the fitting will break in pieces. EZPZ. An advantage to breaking the fittings is that the remaining thread on the pipe will usually remain intact, re-useable.
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