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27th December 2020, 09:32 AM #1
Recommend a flat topped saw blade?
I’m after recommendations for suitable circular saw blades for Kumiko. I have an old contractor style table saw that can be repurposed for cross-cutting trenches to make the frames; it can take a 10” blade on a 16mm arbor.
The blade needs to be fairly thick; at least 3.2mm (1/8”) with a flat topped profile. Although the saw is rather underpowered it is only going to cutting trenches up to 8mm deep so the piddly little motor should be able to cope with whatever is available.
So; does anyone have or know of a suitable blade?Nothing succeeds like a budgie without a beak.
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27th December 2020 09:32 AM # ADSGoogle Adsense Advertisement
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27th December 2020, 10:13 AM #2Taking a break
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27th December 2020, 11:05 AM #3
Chief, the closest thing I can think of it probably hard to get at least in Australia.
Triton 9.25" ATB plus Raker has a 30mm arbor but comes with a 16mm reduction plate.
It might not meet your thickness criterion though as it is 2.8mm I think. Probably available from Triton UK.
Sorry to hear you have contracted the Kumiko bug. One day they might develop a vaccine for that one too.I got sick of sitting around doing nothing - so I took up meditation.
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27th December 2020, 11:09 AM #4
Pretty sure it’s 16mm; but I bought it nearly 20 years ago when I was still living in the UK and it has had extremely intermittent use in the last 15 years. I think I still have the manual but if not I can always measure the arbor. In any case I think any blade I find will have a bigger mounting hole anyway so I expect to need to bush it.
I’ve been struggling to find descriptions of blade tooth geometry from manufacturers who might be available from the limited number of local retailers in Bundy; would you be able to ballpark an OEM and/or product range?Nothing succeeds like a budgie without a beak.
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27th December 2020, 11:16 AM #5Taking a break
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It's harder than I thought...combination blades will often be ATB+R but not always. Milwaukee does one but only 2.8mm kerf, I'll keep looking...
EDIT: Found one Freud LU84M Blade - Major Woodworking Equipment
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27th December 2020, 02:52 PM #6
Chief, a flat tipped blade really isn’t necessary as you always (at least in panels I have made) have a partner strip “mating” across their respective trenches, fully enclosing any bat ears.
Good luck with the journey though
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27th December 2020, 03:07 PM #7GOLD MEMBER
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27th December 2020, 05:19 PM #8
I had an old 10" x 1/8" crosscut blade reground, and it works fine on my 18 yo TSC 10HB. As Elanjacobs says, there is some tear-out when cross-cutting, but you can use a backing piece to avoid the problem.
Don't get the top ground completely flat. Get them to grind half-flats on opposite sides of alternate teeth. The other half of the tooth is angled as usual. This gives the flat bottom that you want, but cuts a bit easier.
Henry Bros. did the grinding.
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27th December 2020, 07:04 PM #9SENIOR MEMBER
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I got a 40 tooth 1/8th inch Opteco ATB reground years ago to Flat Top (all blades) and have to say it works a charm, both for the kind of delicate trenching you are wanting to do and I also use it to mitre for picture framing and also of course finger jointing. So long as I have sacrificial fencing I get no trouble at all. My all time favourite blade
Last year I made a few hundred little crosses for a local church that were delicate like the Kumiko work, and trenched the joinery in very fine pieces of what was heat treated Oak, very splintery stuff too, but the blade was perfect.
Got the blade for a local saw sharpener.
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28th December 2020, 01:23 PM #10SENIOR MEMBER
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Try Henry Brothers:
Henry Bros Saws - Bandsaw blades & circular saw blades
If they don't have exactly what you want they can probably regrind either your blade or one of their new ones
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28th December 2020, 02:05 PM #11
Is this any help?
https://www.timbecon.com.au/torquata...ado-saw-blades
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28th December 2020, 03:09 PM #12GOLD MEMBER
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What’s Kumiko?
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28th December 2020, 03:39 PM #13SENIOR MEMBER
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Kumiko.jpeg
Kumiko is stuff like this, usually 1/8" stock is used and they interlock quite often making precise cutting essential. Traditional Kumiko is cut by hand but even many Japanese makers use the table saw or chop saw these days to make the precise cuts.
Well worth investigating. Be warned, you'll get hooked
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28th December 2020, 03:41 PM #14SENIOR MEMBER
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28th December 2020, 03:41 PM #15
5/8" is 15.875mm. It really does make a difference.
The Torquata item recommended above has 15.9mm on the blade and is described as 16mm by Timbecon in the blurb. Your guess is as good as mine but I would bet it is actually 5/8" in reality. In any event, they don't have any stock.
They also recently added a 30mm arbor option. The 4mm is in stock. That suits me as I have a MiniMax combo. You can definitely bush down from 30mm to 5/8".
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