What size blade

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I've got 25mm thick oak shelf that I need to cut, both widthways and lengthways.

Am I better using a hand saw or circular saw? If circular saw, what blade to get a nice finished cut edge?
 
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Circular saw would be better, although you will.still need something like a hand plane to finish the edges. Number of teeth depends on the diameter of the saw blade - but the crosscut genersllt requires a blade with a greater tooth count than the rip (along the length, with the grain) cut. What diameter is your saw blade?
 
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Are these overkill then? lol

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Yes, they are overkill. With even a 48t blade on 160mm blade you can get scorching when making rip cuts in solid wood (because the gullets between the teeth on the blade fill up with sawdust too quickly to clear) and a high tooth count also makes for slow rip cutting. That means a tooth count of 28 to 36 tooth is probably going to be a reasonable compromise for both crosscutting and ripping. If you have a plunging rail saw making a 1mm deep reverse-direction scoring cut can help reduce break out of the timber fibres
 
How much are you talking about? Can't you just cut it with a new Jack saw, as the edges will need planning regardless?
 
Yes, they are overkill. With even a 48t blade on 160mm blade you can get scorching when making rip cuts in solid wood (because the gullets between the teeth on the blade fill up with sawdust too quickly to clear) and a high tooth count also makes for slow rip cutting. That means a tooth count of 28 to 36 tooth is probably going to be a reasonable compromise for both crosscutting and ripping. If you have a plunging rail saw making a 1mm deep reverse-direction scoring cut can help reduce break out of the timber fibres

Thank you. Nice explanation for someone that didn't know that. I just thought the more teeth, the finer the cut.
 
jeez there cheap I just paid £40 for some Makita fine blades. though they were 165mm
 
How much are you talking about? Can't you just cut it with a new Jack saw, as the edges will need planning regardless?
It's a 25mm thick and 300mm wide and need to cut it down to 200mm wide, plus cut it in half. I was going to use a hand saw then thought how quick the circular would go through it - was being lazy lol
 
jeez there cheap I just paid £40 for some Makita fine blades. though they were 165mm
The Wolfcraft saw is a chrome vanadium blade - no carbide teeth - so it won't stay sharp for long. The Saxton blade I have tried. It was so-so in terms of cut quality but clogged easily on 18mm MDF. Just bought 6 no.165 x 20mm 24t thin kerf deWalt DT10624 blades from Abbey Power Tool on eBay for £60 (or a tenner each).
 
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How much are you talking about? Can't you just cut it with a new Jack saw, as the edges will need planning regardless?

Not sure that I'm safe to be let loose with a plane - managed to plane the entire side off my finger (don't ask what I was doing) and then used the electric plane and rested it against my leg, forgetting that the blade would still be spinning even though I'd let the power off..........................
 

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