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Unread 07-30-2013, 12:21 AM   #1
outbackmatt
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Cold Saw Vs TCT Saw

I have a TCT chop saw from northern tool which really was a great investment for the price. It eliminated the smelly and messy abrasive chop saw in the shop. The tct cuts are cleaner, 4 times faster, cold to the touch, blades last longer and most importantly it produces cutting chips instead of the respiratory clogging metal dust from abrasive saws.

The only thing I dont like about it is how ear piercingly loud it is, especially on thinner material. This saw calls for ear muffs on top of ear plugs!

For those who have used both, how does a true cold saw compare? Is it any quieter?

I wish there was a way I could actually test drive a cold saw before buying. I've been burned several times by industrial machinery companies claiming their product will do something that it wont. I'm concerned about buying another piece of expensive machinery without testing it first.

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Unread 07-31-2013, 01:23 PM   #2
laybackman
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Quote:
Originally Posted by outbackmatt View Post
I have a TCT chop saw from northern tool which really was a great investment for the price. It eliminated the smelly and messy abrasive chop saw in the shop. The tct cuts are cleaner, 4 times faster, cold to the touch, blades last longer and most importantly it produces cutting chips instead of the respiratory clogging metal dust from abrasive saws.

The only thing I dont like about it is how ear piercingly loud it is, especially on thinner material. This saw calls for ear muffs on top of ear plugs!

For those who have used both, how does a true cold saw compare? Is it any quieter?

I wish there was a way I could actually test drive a cold saw before buying. I've been burned several times by industrial machinery companies claiming their product will do something that it wont. I'm concerned about buying another piece of expensive machinery without testing it first.
Most every shop tool you use, needs you to wear hearing and eye protection.
I use a RAGE 2 saw and it does the job well

http://home.comcast.net/~laybackman/RAGE2.AVI
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Unread 07-31-2013, 01:25 PM   #3
laybackman
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I would think that a portable or stationary band saw would be the quietest saw for metal
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Unread 07-31-2013, 08:33 PM   #4
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Quote:
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I would think that a portable or stationary band saw would be the quietest saw for metal
really depends on what you are cutting.

a horizontal band saw is quiet, clean and efficient. and a porta-band is an indisposable tool in any metal shop. then we added a SWAG offroad table to turn our porta-band into a mini vertical band saw and it has become a daily use item as well.

however, on the original topic in the metal shop where i work, we do not own a cold cut saw. we have an abrasive saw that rarely ever even gets used since we can do anything it can do with the horizontal band saw.
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Unread 07-31-2013, 09:17 PM   #5
outbackmatt
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Oh I forgot to mention I'm doing production quantities with the saw.

I have a horizontal band saw and most often use it for cutting pieces that are too odd shaped to fit on my custom made tct production sawing table. The band saw is invaluable when needed, but too slow for production. I can make 5 cuts with the tct saw in the same time I can do 1 with the band saw. Maybe my band saw is just really slow. I also have a port a band but rarely have use for it.

As far as noise goes I am OCD about wearing ear plugs. I put them in at the beginning of the day and they dont come out until the end of the day. I will not do one cut without them and I even wear them while mig welding.

Do ear plugs provide unlimited protection against the unusually high pitched tct saw cutting noise?
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Unread 08-03-2013, 03:30 PM   #6
thantos858
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Quote:
Do ear plugs provide unlimited protection against the unusually high pitched tct saw cutting noise?
Look at the rating on your ear plugs and what the manufacture of the saw recommends for safety.

the typical soft ear plugs are rated to
Noise reduction = 32 decibels
Tested in accordance with ANSI standard S3.19-1974

I have noticed that over the ear ones are less effective.

With all that in mind it comes down to the decibels. Anything over 85 dB is damaging. With all things exposure time is a factor as well.
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Unread 08-03-2013, 08:23 PM   #7
outbackmatt
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Somewhere I read ear plugs are less effective for higher frequencies than ear muffs. The problem I have with ear muffs is they dont seal around saftey glasses and become ineffective.

I tested the saw with a decible meter which shows it produces 115-121 db, putting it at the level of instant hearing damage for just a one time exposure without hearing protection.
I wear 32 db reduction ear plugs but to be on the safe side consider worst case protection to be half of that... 16 db. Exposure with protection is still anywhere from 89-105 db.

This saw is the loudest machine I have. The hydraulic punch press comes in at 96 db, hydraulc tubing bender 92 db, and I think grinders are about 110 db or so.
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Unread 08-03-2013, 08:38 PM   #8
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Will anybody with a cold saw let me know the db measurement is cutting 16 ga tubing?
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Unread 08-04-2013, 08:00 AM   #9
thantos858
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Quote:
Originally Posted by outbackmatt View Post
Somewhere I read ear plugs are less effective for higher frequencies than ear muffs. The problem I have with ear muffs is they dont seal around saftey glasses and become ineffective.

I tested the saw with a decible meter which shows it produces 115-121 db, putting it at the level of instant hearing damage for just a one time exposure without hearing protection.
I wear 32 db reduction ear plugs but to be on the safe side consider worst case protection to be half of that... 16 db. Exposure with protection is still anywhere from 89-105 db.

This saw is the loudest machine I have. The hydraulic punch press comes in at 96 db, hydraulc tubing bender 92 db, and I think grinders are about 110 db or so.
I haven't had a problem with the ear muffs I have sealing but I put them on first then the glass but I have been using DeWalt goggles for better protection. I had a disc shatter and smack the bottom eyelid even with glasses on that fit properly to my face.

http://www.homedepot.com/p/DEWALT-Sa...9#.Uf5eSKzDtYQ
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Unread 08-05-2013, 10:32 AM   #10
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Use a 3m face shield in conjunction with your safety glasses. Here's what I use http://www.rockler.com/product.cfm?p...bSelect=Videos watch the video it is inexpensive and unlike the craptastic ones HF sells fits goot and lasts, the sheild is 3/32nds thick.
and here it is even cheaper http://www.amazon.com/s/ref=a9_sc_1?...qid=1375720291
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Unread 08-08-2013, 01:02 PM   #11
outbackmatt
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Recently Ive become suspicious that something is affecting my hearing. I've done some studing on noise exposure limits and must warn anybody using a similar tct saw on a regular basis that ear plugs alone do not neccesarily provide adequate protection. It is recommended wearing a combination of ear muffs and ear plugs for any noise level over 105 db.

I tested the saw with my db meter and it produces 122 db. I always wear NRR 32 db ear plugs, however, OSHA recommends as a guidline to derate the NRR of ear plugs by 50% which means exposure is still 106 db with ear plugs.

The NIOSH maximum permissable exposure limit for 106 db is 3 min 45 seconds per 24 hour period. It takes 4 seconds to cut through most tubing. I average 150 cuts per day which equals an exposure time of 10 mins at 106 db. This means I am exposed to nearly 2.5 x's the db limit WHILE wearing ear protection, assuming I am only getting half the NRR per OSHA estimates. If it happens the ear plugs are providing real-world attenuation of 32 db then there is not much concern for such short duration.
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