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Milling Oak vs Pine ...Help! Cutting speed?


Bob_z_l
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Hi All,

 To explain. Up until now I've milled green Oak and some dead(ish)ash. No problemo.

I've got a Stihl 10deg ripping chain and a granberg and I try to be very careful to get it set right.

 

To the point.. Today i was trying to mill a bit of fresh-ish Pine. About 10ft by 20 inches or so.

My first cut took nearly 3 tanks of fuel in the 660 whereas last year a similar chunk of Oak would take one tank per pass. the saw isn't struggling but I'm producing nowhere the amount of dust I'd expect.

 

 

So...Do I need to use a different angle? 

Have I done something else wrong? Suggestions please. I've got several lumps to  do and I can't be doing 3 tanks a board.

 

Cheers Bob

 

Pine_01.06.2020.jpg

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21 minutes ago, Bob_z_l said:

Hi All,

 To explain. Up until now I've milled green Oak and some dead(ish)ash. No problemo.

I've got a Stihl 10deg ripping chain and a granberg and I try to be very careful to get it set right.

 

To the point.. Today i was trying to mill a bit of fresh-ish Pine. About 10ft by 20 inches or so.

My first cut took nearly 3 tanks of fuel in the 660 whereas last year a similar chunk of Oak would take one tank per pass. the saw isn't struggling but I'm producing nowhere the amount of dust I'd expect.

 

 

So...Do I need to use a different angle? 

Have I done something else wrong? Suggestions please. I've got several lumps to  do and I can't be doing 3 tanks a board.

 

Cheers Bob

 

Pine_01.06.2020.jpg

You say " dust " . I don't mill but have always associated " dust " with a blunt chain . 

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26 minutes ago, Rough Hewn said:

It's your depth gauges probably.
Without reducing those in line with tooth length, you will cut flour and push harder.
emoji106.png

Cheers @Rough Hewn  I'll give them another check, I did suspect but wasn't sure.. It def isn't  a new chain

 

53 minutes ago, jfc said:

When did you last clean the air filter? My 560 was bogging down today, got it on the bench and the air fiter was choked.

I hope not...I've cleaned and checked everything during my lockdown/furlough. Thanks @jfc I will give t another blast.

 

@Stubby Cheers...my observations with the ripping chain are that it does produce fine chip like a dust or powder.  Not like the lovely fat chips off the fresh crosscutting chains. If that makes  sense.

 

 

many thanks for the help and re-assurance.

 

Bob

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The depth gauges, have to be lower than the std depth setting,, but not to low  so it grabs and Boggs. what was it rough?..30thou ? 
 

my 660 I had to hold it back when the teeth were sharp ?
 

edit,,you want something like bran coming out

Edited by Wonky
Ed
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The depth gauges, have to be lower than the std depth setting,, but not to low  so it grabs and Boggs. what was it rough?..30thou ? 
 
my 660 I had to hold it back when the teeth were sharp [emoji1]
 
edit,,you want something like bran coming out

A tenth of a millimetre can make a big difference.
I go about 0.7mm - 0.8/0.9mm depending on species and width of cut.
Wider cuts higher gauges,
Fresh soft woods and under 1m drop the gauges to 0.8-0.9mm
(With an 880. Don't try this with a 660!)
Stick with 0.65-0.7mm with 90cc
[emoji106]
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Thanks for all of this.

 

I wondered initially if there might be a difference between milling hardwood and softwood.

 

This is the first bit of softwood to have a play with. 

Hopefully when it gets a bit cooler after 16.00.  

 

Thanks  Bob

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