How to re-dress drive side of chainsaw chain?

[Fordiesel69]

I have a trashy 24" 3/8 x .050 x 84DL chain, which is a semi chisel and was used for demolition work. I was able to get it professionally re-sharpened, which it cuts excellent. Here is where I was a dummy. The prior owner ran this chain with a .325 x 7 pin rim sprocket, and it did cause wear on that rim. I never thought of this before I wasted the money on getting it re-sharpened. Now when I install this chain on a good matched 3/8 x 7 pin rim sprocket that is NOT worn, the chain binds and does not feel good. How do I re-dress or correct the drive links so that flow thru the rims sprocket better?

Again I already wasted the money or I would have just chucked it in the trash.

 

[wwillson]

Again I already wasted the money or I would have just chucked it in the trash.

Throw the chain away so it doesn't wear your good sprocket.

 

[Zaedock]

Sorry man, it's trashed.

 

[MRC01]

With bicycle chains we measure total "stretch". I quoted that because the metal doesn't actually stretch, but the chain gets longer because the pivots wear. With bicycles, the pitch is 1/2 inch (each link is 1/2 inch long). Measure a 12" span against a ruler and if the last link is displaced more than 1/16" then discard the chain. That's about half a percent, or 1/(16*12) = 1/192 = 0.5208%. We also inspect the chainring or sprocket teeth to check if the tooth profiles are still symmetric. Any asymmetry indicates wear that cannot be fixed, so we replace them.

I suppose we should do the same with chainsaws too. Would the threshold be the same, 0.5%?

 

[Sumboodie]

Throw the chain away so it doesn't wear your good sprocket.

Sprocket is cheaper than the chain.

Surprised the saw shop sharpened it with the driver damage.

I rejected stuff like that. Same with super dull chains... would have to spend 30 mins sharpening and it end up nearly at end of it's use anyhow.
Was $10 for a loose chain, $14 if it came on a saw.
Shop rate was $90/hr... so spending more than ~10 mins was not smart.

"Well... I just bought that chain last week."
Maybe, but someone tried cutting through a concrete wall with it or something, it's junk!

And yeah, it sucks hitting something in a log and ruining a chain or sawmill band, but it happens.

 

[Opelman]

We have a tool at our shop for dressing the drive teeth. Only takes a sec to do.

 

[spasm3]

Would not waste time, or throw good money after bad. Toss the chain.

 

[jeepman3071]

.

"Well... I just bought that chain last week."
Maybe, but someone tried cutting through a concrete wall with it or something, it's junk!

And yeah, it sucks hitting something in a log and ruining a chain or sawmill band, but it happens.

Yeah I see this all the time.

"I just bought this chain".

Yeah well someone must've hit 20 rocks with it.

 

[Opelman]

Before

After

The machine. Franzen, same brand as the chain grinder.