Help on drilling a chainsaw bar

[AndyChalmers]

Hi, I have a chainsaw mill on tracks however I need to attach a chainsaw bar. I have a Stihl 084 with a 30inch stihl bar. Can anyone suggest where not to drill the bar? Can I drill in between the rivets on the nose where the roller goes?

[billpierce]

do not drill near the roller!

[tcfengineering]

If you measure the diameter of the roller sprocket to the outside. Then mark the bar where the sprocket comes to. Then, you want to be at least 15mm back from this mark to your hole centre if you are drilling a 10mm hole. This means that if there is any swarf or jagged edges inside, then they wont foul the sprocket. There are usually some little indentations around here where they have pressed the laminates together, it is OK to drill through these.

 

I have done loads when we make the mills. Just take your time, drill nice and slow with plenty of lube, start with a small hole and work your way up.

[AndyChalmers]

Just take your time, drill nice and slow with plenty of lube, start with a small hole and work your way up.

 

Where have I heard that before

 

Thanks for your advice guys, I'll have a good look at the bar.

[AndyChalmers]

Actually I think my mill is 1 of yours TCF, the old Pro track chainsaw mill in green.

[Haironyourchest]

Pillar drill...grandmother...suck eggs?