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  #11  
Old 06-08-2017, 01:40 PM
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Tim, too bad you aren't nearby. I have an old Ryobi 7 1/4" radial arm saw, less the motor. I got it from my Dad and discovered they had a safety recall. I sent them the motor and they sent me $75. Still have the frame & slide stuff.

I have a circa 1969 DeWalt radial arm I got for free from a buddy, complete with original manuals. Later saw one the same on CL with some extra attachment for about $50. My first old Craftsman was $75 with several extra blades.
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  #12  
Old 06-08-2017, 04:32 PM
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Originally Posted by USMCPOP View Post
Tim, too bad you aren't nearby. I have an old Ryobi 7 1/4" radial arm saw, less the motor. I got it from my Dad and discovered they had a safety recall. I sent them the motor and they sent me $75. Still have the frame & slide stuff.

I have a circa 1969 DeWalt radial arm I got for free from a buddy, complete with original manuals. Later saw one the same on CL with some extra attachment for about $50. My first old Craftsman was $75 with several extra blades.
You know, it really means a lot to me that you are thinking about me

Thanks
Tim
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  #13  
Old 06-08-2017, 04:42 PM
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Originally Posted by MAC702 View Post
I trust my arms to be a lot steadier than a drawer slide from Lowe's. Have you ever seen what those cutting disks do when they aren't held steady in a cut?
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Originally Posted by camdigger View Post
i have never been a fan of radial arm saws. Most cut with the blade climbing and I have had a couple start to self feed. I can only imagine the scene if a brittle cut off blade grabbed and tried to climb over the work...
Having cut my share of steel, and seeing what happens when cutting discs or grinder discs shatter, this project does spook me a little. .

There are some posts on this site about grinders and cut off discs blowing up, maybe you should research a bit and re think your project.
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  #14  
Old 06-08-2017, 04:49 PM
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About 30 years ago, I cut a piece of 8 inch channel iron on my 10" Craftsman radial arm saw. Normally, you put your work piece on the table with the saw behind the fence and pull the saw forward, (toward you).

When cutting steel, you pull the saw toward you before turning the machine on and put the work piece behind the saw, against the fence. There must be enough clearance between the blade and work piece to be able to turn the saw on without the blade rubbing the work piece.

Then, turn the saw on and push it to the rear,(away from you), and cut through the work piece. This eliminated the tendency of the blade to climb the work piece.

With that 8 inch channel and an abrasive blade, the saw didn't have enough snot to cut it in one pass. It took many, many passes, lowering the blade by a gnat's whisker and going back and forth until the sparks stopped before lowering the blade a little more.

The thermal overload cut the motor off before the cut was completed. All in all, a disappointing experience.

One of those Evolution saws look a lot more promising. Just my $.02.


Dave
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  #15  
Old 06-08-2017, 05:48 PM
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Having cut my share of steel, and seeing what happens when cutting discs or grinder discs shatter, this project does spook me a little. .

There are some posts on this site about grinders and cut off discs blowing up, maybe you should research a bit and re think your project.

I believe that with much concern shown by the members of this forum and after reading such concern shown by the members of this forum, I shall cancel this project here and now. I just cannot see myself building something that may cause a loss of a limb or worse yet, cause death.

Thank you
Tim
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  #16  
Old 06-08-2017, 08:53 PM
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I have to be careful because I don't want to end up being the Evel Knievel of this forum
Every single member at this site, if honest, have all earned that trophy several times over.

We've all done our fair share of stuff worthy of being used in an OSHA video of what not to do.

Your in good company.

I can also say with self-assurance that someone somewhere has already tried and are probably still using something akin to what your trying.
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Last edited by LW Hiway; 06-08-2017 at 10:01 PM.
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  #17  
Old 06-09-2017, 01:05 AM
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LW, I have not only been part of the reason for company safety videos, I have qualified for the "scare them straight" clips of what can happen to you if you don't have any regard for what can go wrong....

For one thing, I have a very speckled history with fire.... My wife and kids still remind me now and then of a couple more serious incidents.

I tried to wind some heavy .108" SS wire into spring coils with a mandrel in a 16 x 48" engine lathe. Escaped that one with a simple scar from a slap on the back of my hand from the tail whipping around. My hand was numb for most of a week. Only a 5/8 " long scar now 15 years later........
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  #18  
Old 06-09-2017, 02:12 AM
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Originally Posted by Rufus View Post
I am beginning to get the idea that my project really isn't a good idea.


I want something that will cut flat stock such as shown in this photo. I want to be safe and not lose any limbs or worse yet, get myself killed.

Thanks
Tim
Yep.


I have cut sheet metal with a circular saw using an abrasive blade.
But but be very very careful it will not take much to set something on fire.
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  #19  
Old 06-09-2017, 02:41 AM
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The only time I will be found/seen cutting steel or Al will be with the HF band saw or with handheld side grinders with cutting wheels for a specific material or the smaller jobs using a small Dotco and cutting wheel. I have Plasma and a Gas Ax for longer cuts on small and large pieces of steel. Of course having Plasma allows me to slice Al and SS as well as ferrous.

I will cut roofing tin, corrugated, with an electric hand/skill saw using a non-carbide tipped blade, turned around reversed attached to the saw. Loud as all heck, but slices like butter.

I do have a 14" abrasive cutoff saw, but since I bought the band saw it's not been used since.

Not everyone is fortunate to have the expendable income to buy things to fully outfit a hobby type machine and/or welding shop and/or wood work shop. So one has to be creative and resourceful with his intents to prosper.

Rufus, I did mention the use of the slides on either side of the grinder, but you'd then have to take into account of the covering up of the grinders paddle switch, making you have to have a secondary foot or hand switch fastened to the top of your grinder to allow your hands to be at the ready to release.

If your slide frame work is rigid enough along it's length as it extends and you have a solid back end to allow for no slop in it's raising and lowering, the cutting action would be no more aggressive than if just held freely by hand.

Sometimes, especially within our membership, some of us will be ready to point out weak points, what if's and what could be assumed to happen. I call it the Poo Poo Factor of new ideas. Sometimes we can point out an obvious catastrophic ending to a fine day.

Thinking outside the box is what creates new inventions every day. I saw an episode tonight about the first female film Director, directing Clara Bow in a 'talky' movie. Was having a problem with Clara staying within audio range of placed microphones. She had someone go find a fishing pole and tied the mic from the end of the pole and had it held over head while Clara moved around. It revolutionized the industry and is still in use today in different makes known as a boom mic.

Hell, I can imagine the first mention of using bamboo laced to make a big assed tube and then add an end cap, adding powder and shot and then lighting that biatch off was met with normally closed eyes wide fooking open.

Mounting a skill saw under a table to make a table saw, mounting a router to make a shaper etc etc etc.

I see these last mentioned items shown in OSHA approved safety videos as stupid shit to do. Personally, so what if the blade won't immediately stop when you put your weiner into the turning blade. I call that doing stupid shit.

Trying something safely is not stupid or fool hardy, it's called research.

Now, I'd imagine a good laugh was had by all watching that all wooden airplane with about 10 wings stacked on top of one another was a hoot watching it all collapsed, but hell today we've got all electric planes capable of staying airborne forever with solar cells or fuel cells.

I'd imagine that Igor's doctor and friends thought he was frickin crazy to get into a contraption that had whirling blades of death inches above his head.

Personally, my vote is for you to pursue your creation, adding or removing what's needed to finish this project as needed.

Safety wise, body armor, blast helmet with blast shield and gloves. If not, face shield and gloves.

Poo Poo Factor be damned. Full steam ahead Rufus.
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Last edited by LW Hiway; 06-09-2017 at 02:56 AM.
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  #20  
Old 06-09-2017, 02:50 AM
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Just an add, there are folk using wood to make metal cutting tools like lathes and band saws, all out of wood except for the cutting materials.

I just saw a video on datube of a gent that made a 4 jaw chuck out of wood.

I see folk sandwiching plywood with steel plate to make gears and cogs.

I'm equally assured that if this membership saw how I use tubing of 2" in dia and below, somewhat thin, add threads inside and/or outside, cap off and then fill with 5,000 psi you'd shit a brick watching me proofing a pressure reservoir, much less want to walk around out back holding this shit in your hands or in a sling across your back while attached to a rifle.
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God, if you would grant me one request through Prayer, please help me be the Man my Dog thinks I am. Please.

Collector of, shooter of and builder of "TightAir Guns".

I never thought I'd live long enough to become a grumpy old bastard. Here I am, killing it!
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