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Old 08-27-2013
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Cutting an aluminum boom

I have an old boom that came off a Catalina 27'. It got bent and is no longer usable as boom and the boat is long gone anyway.

It is good aluminum however and I could use a couple short pieces for a project I have in mind.
I have a chop (miter) saw that is big enough.

Is their any kind of blade I can put in the chop saw so I can accurately and squarely cut the aluminum extrusion.
If so is their anything I should know other than wear hand and eye protection and go slow.

I'm very comfortable with any kind of wood work but my metal working experience is limited.
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Old 08-27-2013
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Re: Cutting an aluminum boom

A 60 tooth blade will make a nice cut. I did a 9" mast section this way.
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Re: Cutting an aluminum boom

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Originally Posted by Capnblu View Post
A 60 tooth blade will make a nice cut. I did a 9" mast section this way.
I use the above and some cutting oil to make the blade stay sharp longer.
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Old 08-27-2013
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Re: Cutting an aluminum boom

And if you want to save your nice 60 tooth blade for wood they do make "cut off wheels" for aluminum. A good 60 tooth saw blade is not cheap.
ALUMINATOR Cut Off Wheels for Aluminum | Rex-Cut Abrasives
No affiliation.
Home despot probably carries an equivalent product.
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Re: Cutting an aluminum boom

Wax candle help the cut and prevents spauling on the teeth. Otherwise just like wood.
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Re: Cutting an aluminum boom

What is it with Catalina 27s & 30s with the bent booms?
Is it the mid boom sheeting?
A Catalina 30 at our club bent it's boom while racing in 20+ knots a few years ago; accidental jibe.
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Re: Cutting an aluminum boom

Quote:
Originally Posted by CalebD View Post
What is it with Catalina 27s & 30s with the bent booms?
Is it the mid boom sheeting?
A Catalina 30 at our club bent it's boom while racing in 20+ knots a few years ago; accidental jibe.
In our case the OP had re-rigged the sheet from a three point connection to a single connection and we didn't know enough at the time to fix it.

It was already bent a little so was guaranteed to fold.
We just didn't know enough at the time.
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Re: Cutting an aluminum boom

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Originally Posted by Capt Len View Post
Wax candle help the cut and prevents spauling on the teeth. Otherwise just like wood.
How do you do that exactly.
Rub it on the teeth before each cut?
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Old 08-27-2013
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Re: Cutting an aluminum boom

Quote:
Originally Posted by CalebD View Post
And if you want to save your nice 60 tooth blade for wood they do make "cut off wheels" for aluminum. A good 60 tooth saw blade is not cheap.
ALUMINATOR Cut Off Wheels for Aluminum | Rex-Cut Abrasives
No affiliation.
Home despot probably carries an equivalent product.
That looks perfect. I would prefer to use the miter saw rather than the angle grinder to get a better cut.
I see if I can get a wheel that will work on the bigger saw.
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Old 08-28-2013
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Re: Cutting an aluminum boom

they make the 14" aluminum cut off wheel for a metal cutting chopsaw
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