hot stuff!!

[JAYJAY]

now then all!

Gill recently opened my eyes to stacking so i thought i'd give it a go, i 1st tried a double and all went reasonably well but this morn tried a triple and noticed just how hot my blade became and how rapidly became pretty useless. i do use a wax type lube every so often but think i could have it permanently pressed up against the blade in this case and still burnt it out.
the wood is a birch face ply aprox 3.5mm (ea)
i used a reverse skip tooth RV5 (could this be wrong choice)?
i can only guess my speed ...prob about 800rpm (am i all hell and no notion)?
:?
i was wonderin is it something i'm doing wrong or is it just the fact there are alot more teeth in contact with the larger surface area of wood doin a lot more work?
i'm gonna persevere and try again pretty soon as i've found with scrolling there's a lot of trial and error but jus wondered if there was something totally obvious i'm doin wrong here? so if anyone could give some advice and save me some of my resources and time (it took me probably as long to do as it would have to do two double stacks) (and the bottom piece was damaged a bit and very rough)
i'd be very grateful
many thanks,
Jay

 

[Mike M]

Wood with glue will heat the blade faster than any other wood.
To help eliminate burning, use tape. Some use the blue painters tape on the wood, I always used the 2" package tape on top of the pattern.
The tape has a chemical what releases friction, wax will not do this.
(and the bottom piece was damaged a bit and very rough) This might have to do that the reverse teeth are not coming above the table, or the speed could be too low.
Mike

 

[Gill]

I agree with Mike that you should apply low-tack masking tape to the top of your wood stack and fasten your pattern on top of the tape. The lubricant which prevents the tape from sticking to itself when it is in a roll will help to lubricate the blade.

Skip tooth blades will help to clear away the swarf more effectively than standard blades, so stick with them. If your saw has a variable speed, slow it down and feed your material in using the lightest possible pressure; make sure the saw does the work. Also, check the blade tension is tight.

Stack cutting is supposed to increase your productivity. If it doesn't, revert to cutting a stack of just two pieces at a time - you will still be twice as productive as before .