What Recip Blade will cut a 10mm bolt, grade 10.8?

ulflyer

ulflyer

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Used two of blades that came with saw for cutting metal and they barely made a dent. Had used same type blade previously on some hard stuff and it was hard work, but they did the job. What do I need now? Would these type/brand likely work:
Amazon product ASIN B00NO8331S
 
ulflyer said:
Used two of blades that came with saw for cutting metal and they barely made a dent. Had used same type blade previously on some hard stuff and it was hard work, but they did the job. What do I need now? Would these type/brand likely work:
Amazon product ASIN B00NO8331S
Click to expand...
They’ll cut through case hardened bearings and a 1.5” shaft.
 
The Recip saw is all I have. Its a long bolt that holds the bottom of a shock on a Can Am trike that bent and there is no room to beat on it or any way to apply pressurre. We worked on it today, wore out two of the blades that came with the Harbor Freight saw, making little headway. I held the saw in place and my buddy, owner of trike, applied the pressure. We did accomplish one thing: we sweat a lot. LOL.

Two of the Diablos are ordered and will be here Thursday. If these don't cut thru the bolt, he will take it to Honda dealer in Winston.
 
Try to tighten it until the nut breaks. Have you applied some heat from propane torch to the nut?
 
The nut came off easily; the bolt has about 1" long spacers one each side of the shock to keep it in place and now, being bent, the bolt has a lot of pressure on it and can't be pulled through. This is something we jury rigged when the previous bolt broke and original parts lost. New stuff is on order and expected this week and is a diff and stronger set up. Just need the get the old one cut, next to the shock eyelet, and then out.
 
Can you jack up the body of the trike or the wheel to relieve pressure on the bolt. I know the front end of those things have some tight spaces to work in.
 
We do have a good motorcycle jack that raises it high enuf to lay under and takes most pressure off the bolt assembly. The two frame brackets that the bolt goes thru are up under the trike so that there is maybe 4" or so on either side to work. Not enuf to tap with hammer/punch/etc. I don't have any sort of pusher device that might work or any tools out of ordinary. Best idea i could come up with is to cut the bolt. It is a good aftermarket shock but the bolt assembly is somewhat diff and not nearly as strong as the OEM. This is the third time around at using "stronger bolts and spacers"!
 
Yeah the higher quality blades you posted will work.

Just take note that full throttle on the recip in hard metal will over heat the blade and ruin the teeth. There is a sweet spot in the rpm range
 
Trevillian, good to know. Meant to ask about that and forgot. Would you say, about medium? I ran it full out this morn. No wonder it fried the blades.
 
ulflyer said:
Trevillian, good to know. Meant to ask about that and forgot. Would you say, about medium? I ran it full out this morn. No wonder it fried the blades.
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Use some "cutting" oil also, most any oil will help.
 
Will try....will prob drip in my face tho! LOL. I've got plenty of oils, some light 10W stuff, will give it a try.
 
ulflyer said:
Trevillian, good to know. Meant to ask about that and forgot. Would you say, about medium? I ran it full out this morn. No wonder it fried the blades.
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Yeah, somewhere in there. You should be able to "feel" when it's biting good. To slow and it jerks the saw around around, to fast and it ends up "skating" across.

Also, as mentioned, lube will help. Eases friction and adding more keeps the blade cooler. But isn't really a "must" do. If your in a tight spot where it will make a bigger issue
 
Thanks Trev. He's getting the new parts tmr but the blades are not due till Thurs. Looks like Fri before we can try it again. We are both old farts so we take a lot to time to get anything done. LOL
 
Wow, has this been a learning experience. I didn't expect to get so much good feedback. I think the wax might work as the strain of holding the saw and pressure applied, for both of us, is such that we frequently stop for a rest. I've got a ton of candles I can stick the blade in (only the front couple of inches are used) during our breaks. Really appreciate it folks.......
 
Those Diablo blades are outstanding. Yesterday I had to cut thru several 10mm grade 10.8 bolts, used very little oil or wax as it just wasn't feasible, and the blade did the job. It was slow going, largely due to diff position, but afterwards, the blade still looks and feels like it has a lot of life left.

Thanks again for all the useful feedback.
 
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