An Impossible Bar Repair?

[Wood Doctor]

One of my logger buddies gave me this 30" bar last year and asked if I could somehow bring it back to life:

I asked him, "Andy, how on earth did you do this?" He said, "I dunno. ___ happens."

(1) Any ideas how it happened? What caused it?
(2) Can it be fixed? If so, how do I do it?

 

[ammoaddict]

Duct tape and super glue.

Sent from my moto g(7) power using Tapatalk

 

[Deets066]

 

[Pincher]

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Well thats one way...

 

[Pincher]

Possible answers-
1) bar got pinched, power head took a big hit and snapped bar?
2) yes it could be salvaged. My first thoughts were to cut out a piece from a worn out or damaged bar to replace missing part, then weld in place. But Deets way looks better. May only be 28" when done.

 

[JimBear]

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Hory sheet, I was thunking that you would just write a profile program & run around it with an end mill. You broke out the face mill & got after it.

 

[Philbert]

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Looks like Cannon has some competition in the Land of Lincoln!

Philbert

 

[Deets066]

Hory sheet, I was thunking that you would just write a profile program & run around it with an end mill. You broke out the face mill & got after it.

Manual machines here

 

[Wood Doctor]

As for the repair and lacking carbide drill bits and cutters, seems like $90 for a new bar might be faster and easier, but I really admire Deets066's workmanship in post #3. Bar length would likely drop down to a 25".

I have never seen a bar break like this in use and no one can explain it. The saw was an MS 660. Log being sawed was likely big cottonwood. The break was a clean snap. I'm thinking a defective bar, but that seems like a cop out.

 

[Czed]

Chainsaw guy's customer's had some issues

Never had one break myself
Bent a few over the year's.

 

[MarcS]

Chances are if your buddy did not want to give a straight answer about what happened it was a bonehead move. Lol.

Looks like shortening is the best bet, nice pictures of quality work shared by Deets066.

 

[Wilhelm]

Going by the missing paint in the bars mounting area, ham fisting was the bars demise.

I too say shape a new tail.
You do not need a mill, angle grinder, straight shaft grinder and drill press should do - although it will take a little time, effort and patience.

 

[Philbert]

One of my logger buddies gave me this 30" bar last year and asked if I could somehow bring it back to life . . .

Seems like a lot of work, unless it is a special bar, or just to prove that it can be done (like @Deets066 post).

But I am also trying to imagine what the saw looked like after that happened!

Philbert

 

[Deets066]

It’s shortening or buying a new bar. Successfully welding and grinding the bar groove would take more skill than shortening.

 

[XP_Slinger]

Manual machines here

Skilz...nice work man

 

[XP_Slinger]

As for the repair and lacking carbide drill bits and cutters, seems like $90 for a new bar might be faster and easier, but I really admire Deets066's workmanship in post #3. Bar length would likely drop down to a 25".

I have never seen a bar break like this in use and no one can explain it. The saw was an MS 660. Log being sawed was likely big cottonwood. The break was a clean snap. I'm thinking a defective bar, but that seems like a cop out.

Is there any variation of color where it broke? Dark spots in the break would indicate a preexisting defect.

 

[qurotro]

Cutting a new tail chain groove might be difficult for my skill.. Reshaping is easy with an angle grinder...

 

[Pincher]

Reshaping is easy with an angle grinder...

Works on cylinders...

 

[Deets066]

Cutting a new tail chain groove might be difficult for my skill.. Reshaping is easy with an angle grinder...

You have to open groove at the tail. A cutoff wheel works for bar groove entry/exit

 

[qurotro]

You have to open groove at the tail. A cutoff wheel works for bar groove entry/exit

I assumed you have to cut the groove deeper so the chain won't bottom up?