Oregon 620 sharpener?

[Tippin Alaybye]

Yes a few years ago now. Can’t go wrong and dead quick

[Paddy1000111]

So I picked up a Oregon 620. I tried to get the tecomec version as it was cheaper but after 3 weeks of faffing they weren't able to ship it to the UK 🤦🏼. Bit of an odd question on discs. Why does it have the same discs for 1/4-.325-3/8p and then another for 3/8-404? Surely it should be a different disc for each size? 

 

Also realised that even though it's advertised as going to 40 degrees it only goes to 45 which is a little annoying! 

[Woodworks]

7 hours ago, Paddy1000111 said:

So I picked up a Oregon 620. I tried to get the tecomec version as it was cheaper but after 3 weeks of faffing they weren't able to ship it to the UK 🤦🏼. Bit of an odd question on discs. Why does it have the same discs for 1/4-.325-3/8p and then another for 3/8-404? Surely it should be a different disc for each size? 

 

Also realised that even though it's advertised as going to 40 degrees it only goes to 45 which is a little annoying! 

I wondered about this when I got a grinder but when you think about the radius in the gullet does none of the cutting. The side plate and top plate angels are what matter. Suspect the recommendation for a the thicker grinding disc for the larger chains is more to do with them being stronger as  you are removing more metal, Least thats my take on it 

 

[Stere]

 

Take a gander here:

 

https://www.tecomec.com/allegaticlasse/37603.pdf

 

 

[Paddy1000111]

Ahh interesting! It just seems odd? Surely if the wheel size is off you can't touch up a chain in the field with a file as the profile isn't right? It explains why a new chain takes a few passes for the file to bed in though! 

 

Also makes me realise I should have used the larger wheel on the .325 chain 🤦🏼

Edited May 23, 2021 by Paddy1000111

[Woodworks]

6 minutes ago, Paddy1000111 said:

 Surely if the wheel size is off you can't touch up a chain in the field with a file as the profile isn't right?

That is the case to an extent. Better to have a smaller disk as when using the the file it will touch up the cutter from the off but wont if you have used a bigger disk with larger radius than your file size. 

[Stere]

Yeah I though theere would be differrent ones for each chain.

 

Not sure which colour wheel is best either suppose the white ones unless the chain is really knackered as will take less off?

[Paddy1000111]

I think the 4.7mm (large) wheel is about right for .325 as the Stihl file is 4.8mm. it's smaller than a standard .404 file so like you say it will make touch ups easier. 

 

I've just done my milling chains and it seems to leave a nice profile. Barely takes anything off when it's set up right and doesn't leave a bur so all in all I'm quite happy! The 74" skip chain I have clipped a piece of dirt or something so it was nice not to have to mess about filing that out. Just did one side and then reset for the other using a pair of Vernier calipers to make sure the teeth are the same. 

[peatff]

5 hours ago, Paddy1000111 said:

I think the 4.7mm (large) wheel is about right for .325 as the Stihl file is 4.8mm. it's smaller than a standard .404 file so like you say it will make touch ups easier. 

 

I've just done my milling chains and it seems to leave a nice profile. Barely takes anything off when it's set up right and doesn't leave a bur so all in all I'm quite happy! The 74" skip chain I have clipped a piece of dirt or something so it was nice not to have to mess about filing that out. Just did one side and then reset for the other using a pair of Vernier calipers to make sure the teeth are the same. 

Is that set to 0° ?

[Paddy1000111]

1 hour ago, peatff said:

Is that set to 0° ?

10 degree offset, 10 degree on the angle, 50 degree on the head. It's what the manual says for the 27ra ripper