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Thread: 'Plain' Blades v Spiral Blades.
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25th March 2008, 09:59 PM #1Senior Member
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'Plain' Blades v Spiral Blades.
We have a small regular attendence at our Scrollsaw Club, about ten bodies. There are two who have been sawing longer than the rest of us. These two use only spirals, won't and say they can't use other than spirals for everything. Others of us, relying on the magazine information that we read, stick with plain blades and have been having a go at them for the spirals use.
The other day I was attempting a 'compound' cutting project - 30 t0 40 mm stuff - and found that I was producing 'funnel' shapes. Yes, I'd squared the blade and confident that I was not pushing the piece unduly. I was using a WMS machine which I'm pleased with.
So, at the next club meeting I tried the three machines we have, GMC, Delta and Riobi - squared the table, etc. and using No. 7 blades - with the same results - funnels. This was with plain blades and the timber was two pieces, 20mm and 30 mm thick. Two other members had a go, same result. We then changed the blades to spirals -2/0's - and although the cuts were thicker we got acceptable results!!!
Whilst reluctant to use spirals, other than for portrait style, I must admit that spirals will be the way to go for me with the compound jobs.
Needless to say the 'spiral' pair are still chuckling.
Bob H.
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25th March 2008 09:59 PM # ADSGoogle Adsense Advertisement
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30th March 2008, 04:48 PM #2
Thanks for that information... would have never thought of using spirals for compound because of the wide kerf.
There's one guy in our club who love spirals and does all his portrait style work with them, but he is the only one using them, the rest of us are stuck with the regular ones.
I've tried different spirals, always takes my head a few minutes to get around the "I can cut in any direction" idea..... so I'm reluctant to use them, it is harder for me to cut very straight...... then switching back have to actually THINK again.... lol So yep... I avoid them unless I really have no choice because the wood is too big.
I also find they break much quicker... if that's because I push too hard or because of the spiral making the blade more fragile ( try twisting paper into a spiral and see how quick it breaks) it's just not good economics for me.
I experimented with metal blades the other day..... was very suprised to find that a normal #1 blade cut pine beautifully with almost no fuzz on the back... something I haven't even been able to achieve using reverse blades! Seemed slower, but accurate...
JuvyWoodcrafters Haven
Wodonga - Supplies for Turners and Woodcrafters
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