Funny grooves

[topchippyles]

Should not be cutting like that at all.

[Johnsond]

56 minutes ago, topchippyles said:

Should not be cutting like that at all.

Been cutting like that since day one Les, set up absolutely square on a proper strong trailer bed, always use fresh ripper 37s. Other than that what else is left to do 🤷‍♂️. 

Ill take some pics of the woodmizer LT40 cut Elm boards later on, they show virtually identical markings. The saw marks whilst visible are very very shallow as I’ve said and not enough for me to even worry about, rough cut is rough cut if I want dressed I’ll plane them. One pass at .25 or .50 mm will normally be more than enough. 

Edited January 31, 2021 by Johnsond

[Stubby]

I'm no miller so , from a layman's point of view , and coming from an engineering background it looks like you have a sympathetic resonance there . The pitch of the teeth vibrating with the speed of cut against the feed rate  . Or ... I could be talking bollox ...🙂

Edited January 31, 2021 by Stubby

[topchippyles]

Just now, Stubby said:

I'm no miller so , from a layman's point of view , and coming from an engineering background it looks like you have a sympathetic resonance there . The pitch of the teeth vibrating with the speed of cut against the feed rate  . Or ... I could be talking bollox ...🙂

Yes the usual bollox 🤣 You asked for that stubby 

[Stubby]

Just now, topchippyles said:

Yes the usual bollox 🤣 You asked for that stubby 

Fair play .

[topchippyles]

2 minutes ago, Stubby said:

Fair play .

Just beat K to it no offence in any way and some method in your madness there. Wonder if both are using ripper blades ?

Edited January 31, 2021 by topchippyles

[Stubby]

4 minutes ago, topchippyles said:

Just beat K to it no offence in any way and some method in your madness there. Wonder if both are using ripper blades ?

When milling steel ( Different kind of mill ) you could induce " chatter " if you went too fast with the feed rate and/or the cutting speed .  Change to a cutter with more teeth slow the cutting speed but up the feed rate slightly goes through like a hot knife in butter . Just trying to draw a parallel . 

[Watercourse management]

Could it be a band wheel out of shape?

[Youngstu]

Just a thought... Are the grooved patches evenly spaced? It's probably not this, as the wheels on the carriage are quite small, but are they true or for some reason out of line / one off the track in certain places? 

Or, alternatively are these patches appearing in the same places relative to the track? Could there be a slight wobble in the support beam in certain places when the weight of the sawhead is there? 

[topchippyles]

11 minutes ago, Youngstu said:

Just a thought... Are the grooved patches evenly spaced? It's probably not this, as the wheels on the carriage are quite small, but are they true or for some reason out of line / one off the track in certain places? 

Or, alternatively are these patches appearing in the same places relative to the track? Could there be a slight wobble in the support beam in certain places when the weight of the sawhead is there? 

Blade tension for me all day long as that controls the wheel alignment.

Edited January 31, 2021 by topchippyles