Author Topic: New Oregon Grinders  (Read 911 times)

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Online Philbert

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Re: New Oregon Grinders
« Reply #10 on: August 11, 2015, 10:29:09 pm »
Replacement wheel (made in Italy - right) vs OEM supplied wheel (made in China - left).
I like  coarse with light touch.

BIG difference!

Wow!  Like using a sharp versus dull chain.  It was so much fun that I ran in and grabbed another chain to grind (I like to grind outside).

Molemab wheels are are sale right now at Bailey's - might pick up a few of those.
http://www.baileysonline.com/Chainsaw-Chain/Chain-Grinders-Wheels/Chain-Grinding-Wheels/Chain-Grinding-Wheels-4-1-8-Diameter/Molemab-Grinding-Wheel-4-1-8-x-3-16.axd

Philbert

Online Philbert

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Re: New Oregon Grinders
« Reply #11 on: August 13, 2015, 11:14:42 am »
OK - down to $75 (+ shipping) on eBay now.
Must be my posts that are driving sales!

Philbert

Offline DefinitiveDave

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Re: New Oregon Grinders
« Reply #12 on: September 29, 2015, 03:15:12 pm »
I picked up a pair of 520-120 grinders, looking to set one up in the garage/shop to tackle the wall of once used chains I am too lazy to hand file.
I read through the manual and it looks like I need to change wheels for rakers, which seems crappy.

this thread seems to say that the included wheels are junk and I should get better wheels.   Does Oregon make better wheels or do I need to buy elsewhere, I prefer to buy wholesale in case I like the setup well enough to buy in bulk for resale.
 Are there any really good youtube vids that show the right way to get a good result with an Oregon grinder?
sorry for the million questions
Dave
seeking new in box 046, standard or arctic model



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Online srcarr52

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Re: New Oregon Grinders
« Reply #13 on: September 29, 2015, 03:22:12 pm »
I picked up a pair of 520-120 grinders, looking to set one up in the garage/shop to tackle the wall of once used chains I am too lazy to hand file.
I read through the manual and it looks like I need to change wheels for rakers, which seems crappy.

this thread seems to say that the included wheels are junk and I should get better wheels.   Does Oregon make better wheels or do I need to buy elsewhere, I prefer to buy wholesale in case I like the setup well enough to buy in bulk for resale.
 Are there any really good youtube vids that show the right way to get a good result with an Oregon grinder?
sorry for the million questions
Dave

Oregon wheels are ok, the wheels that come with the import grinders are terrible.

Molemab makes good wheels for the Oregon, I like the 5/16" thick wheel for rakers.

Online Philbert

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Re: New Oregon Grinders
« Reply #14 on: September 29, 2015, 03:35:43 pm »
I picked up a pair of 520-120 grinders,  . . . this thread seems to say that the included wheels are junk and I should get better wheels.

Dave, the grinders you bought are a replacement for the 511A/511AX full-sized grinders.  They are probably made in Italy (?) and come with the pink, Italian grinding wheels (?) - please correct me if I am wrong.   http://www.oregonproducts.com/pro/products/accessories/BenchGrinder_520-120.htm

The cheap wheels I mentioned came on the smaller, Oregon 310, grinder, made in China, and supplied with fine, brown wheels, also made in China, that were much lower in quality and performance.  I would start with the wheels that came with yours, and see how they work.

Yes, you have to change wheels to grind the depth gauges.  Some guys dedicate a grinder just for this task - sometimes they buy a used one off of CL, or buy one of the $120 clones for this purpose.  Worthwhile if used in a production mode to have 3 grinders, set up with 1/8", 3/16", and 1/4" (or 5/16") wheels.

There are a number of threads on using these grinders on different forums.  My top tips:
- take lots of little 'taps', not big ones, to avoid burning cutters (all 'dots' and no 'dashes' if you ever learned Morse code);
- dress the wheels frequently to expose fresh abrasive, not just to maintain the shape (at least once per chain loop, and anytime grinding performance changes);
- only take the wheel down as far as you would file the cutters - go back and clean out the gullets on a second pass (move chain stop back 1/2 turn or so) if needed;
- don't assume that the Left and Right cutters will come out the same.  I grind all of the Left cutters first, then just one of the Right cutters.  Stop, hold it back-to-back with one of the Left cutters, and adjust the chain stop or wheel depth accordingly.

Take your time and you will soon fall into a rhythm.

Philbert

Online Philbert

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Re: New Oregon Grinders
« Reply #15 on: September 29, 2015, 03:52:35 pm »
Does Oregon make better wheels or do I need to buy elsewhere, I prefer to buy wholesale in case I like the setup well enough to buy in bulk for resale.

As srcarr52 mentioned, Molemab makes replacement wheels for these grinders.  They are sold individually through Bailey's, and offered in bulk through Stens. When on sale at Baiiey's they go for around $11 or $12 each, for your size grinder. These have a slightly different grit than Oregon branded wheels (one is 60 grit and one is 80 grit as I recall). 

Bailey's also carries the resinoid wheels for these grinders: https://www.baileysonline.com/Chainsaw-Chain/Chain-Grinders-Wheels/Chain-Grinding-Wheels/Chain-Grinding-Wheels-5-3-4-Diameter/Molemab-Black-Resin-Grinding-Wheel-5-3-4-x-1-8.axd  These are similar in appearance to cut-off wheels, and are less likely to 'burn' a cutter, and slightly less expensive to buy.  You might want to try one.  They give off a phenolic smell, however, so I prefer to only use them out doors.

http://chainsawrepair.createaforum.com/chain/chainsaw-chain-grinder-wheels/msg43656/#msg43656

Philbert

Offline 660magnum

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Re: New Oregon Grinders
« Reply #16 on: September 29, 2015, 08:30:30 pm »
As you can tell from previous posts, Oregon wheels are not always made by the same company.

At first I expected them to all be made in Italy? Ergo the grinders like the 511A were made in Italy?

Not so, If you start looking at the center paper on Oregon wheels, in addition to Italy, you will see USA, Canada, & even China.

I always assumed the Oregon Italian made wheels to be Molemabs? Maybe not?

I don't consider Far Eastern made wheels to be worthwhile no matter what the price?

 
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Offline DefinitiveDave

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Re: New Oregon Grinders
« Reply #17 on: September 29, 2015, 09:04:03 pm »
I will start with the wheels I have, I may set up the second grinder for rakers. These chains are once used never sharpened and I want them to be nice enough to use on saws for sale.
It is probably easier to change the cutter wheel every once in a while to do the pico chains than to swap out the raker wheel all the time.  We go through a lot fewer pico chains as the climber likes to hand file and his saw never cuts on the ground.

any idea how many 3/8" .050 20" chains I might get out of one wheel?
stupid thing is I had three grinders but sold them :(
thanks for the pointers
Dave
seeking new in box 046, standard or arctic model



Ebay Store: http://stores.ebay.com/Chainsaw-Conservation-Components

Online Philbert

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Re: New Oregon Grinders
« Reply #18 on: September 29, 2015, 09:57:51 pm »
It is probably easier to change the cutter wheel every once in a while to do the pico chains than to swap out the raker wheel all the time.

Very easy to swap wheels on these grinders..

any idea how many 3/8" .050 20" chains I might get out of one wheel?

Dozens.  Maybe hundreds. Especially if you are just touching up cutters, and not re-shaping them, or restoring rocked chains.

It's always good to have an extra wheel in case you drop one.

Philbert

Offline Cut4fun .

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Re: New Oregon Grinders
« Reply #19 on: October 01, 2015, 01:41:42 pm »
I change back and forth for 3/8 and 3/8LP. Cant remember off hand but thinking 3/8LP and 325 on same wheel.
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