Thread: rotating log to relieve tension

what size were the logs and what were you cutting?

6 mt long 35 to 45 head dia cutting 4x2 3x2 8x2 6x3 6x2 6x1

teh length is your killer there on small logs.

if your boards dont need to be that long dock teh logs down.

you need to run off after each layer and work your centers that way you will get no spring but will still have bow. but thats not a big deal usually.

rotation wont held your boards much it will reduce hump thow.

how mutch sap is on the logs?

About 20 to25 mm sap.
Unfortunatly i cant dock the logs as the customer needs 6m he wanted 8m but i talked him into 6m.
As for running off after each layer (witch i don't mind) i cant even take the sap of the edge of a layer without the log pulling 3 to 4mm even when i move over and cut the width of the board i have to raise the mill and trim the top then lower and cut the bottom its a real pain

sounds like you have got yaself some fast grown high tension logs.

people dont understand that you gota cut what teh log will give you. you cant make a silk purse out a sows ear.

one way to do it is flitch off the top and then both sides full depth (8"?) to the width of your board and then trim off the top.

this should have almost all the sap gone and you can cut horizontals down the center, this will take all the spring from your boards.

it is a bit wastefull unless you have a bench to resaw your flitches, and takes a little longer but sometimes its the only way.

give us a ring if ya need a better explanation.

cheers weisy might have to try that next week 10 cube of saw log down only 6 cube or so to go

iv only had to do it twice.

there is always a way to get good timber out you just have to work it out.

what saw do you run?

i agree where there is a will there is a way

lucas 10-30

stick em under the sprinklers for a few weeks!

Yeah heard the sprinkler thing works but its been raining on them for the last week or so

I hope you have a lot of water & a lot of time. Generally though with HWD to get bigger sections you need bigger stable logs
regards inter

i wouldnt try to cut anything over about 5x2 outa logs that size.

unless tehy turned out to be stable.

I would agree but when thats all they have then that has to do.
certainly makes for some interesting times

What you could try is along the lines of what weisy said, but this is my version which works for me, say your cutting 8 x 2s
you take a roundback off the top parallel with the heart, 4 1/2 " from the heart, roll the log 180 ', take another roundback slab off the top to within 4 1/2" from the heart,
now you are left with a 9" thick stick, grab your chainsaw & rip vertically from each end of the stick so about 80% of it is sawn in two evenly from either end. It will have spread at each end like a carrot. Skim cut the top, then drop down 8" & cut off boards as you would do normally, with 6m logs if your lucky you might get one off either side.
regards inter