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Thread: 1" or 25mm slitting saws.
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12th Dec 2021, 07:19 PM #1Most Valued Member
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1" or 25mm slitting saws.
1" or 25mm horizontal slitting saws etc. What is more common or easier to source? Considering changing to 25mm on the Hercus when it comes time to putting it back together. Will take a little work, but I have a 25mm 3MT test bar 25mm diameter, that I think I can modify to make a new horizontal arbor. Original arbor is ok but a little tatty looking from slight corrosion from lying around. Have cleaned it up.
Nev.
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12th Dec 2021, 08:12 PM #2
Hi Nev, Guys,
The only saw blades that I've seen in those sizes are the Dremal style ones, in a pack of five from China !
Since the 75 mm plunge saws have become popular I taken to buying the packs of three blades that they use. They are all 1.2 mm thick and have a TCT, and two Diamond coated ones in a pack for £2.99 here in the UK. I got another pack recently from Lidl when they were selling the plunge saws.Best Regards:
Baron J.
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12th Dec 2021, 08:28 PM #3Most Valued Member
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Sorry Baron. I think I confused you. I was referring to the bore of the blades for horizontal mill. Should have mentioned this.
Nev.
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12th Dec 2021, 10:18 PM #4Most Valued Member
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Why butcher your test bar? Just grab a 3MT blank arbor. https://www.lprtoolmakers.com.au/bla...eaded-or-tang/
edit: horizontal mill. I guess the arbor needs to be long?Chris
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12th Dec 2021, 10:26 PM #5Most Valued Member
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13th Dec 2021, 02:44 AM #6
Ah ! Thanks for the clarification.
I went and took pictures of the blades that I thought you meant. Anyway their pictures are here now
12-12-2021-002.jpg 12-12-2021-001.JPG
The first picture has the large blade removed, it was in use but I can't put my hand on it at the moment. The other picture is the pack of three blades that I bought a couple of weeks ago. I thought that they were 75 mm but it seems that they are 80 mm diameter.Best Regards:
Baron J.
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13th Dec 2021, 02:50 AM #7
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13th Dec 2021, 06:32 AM #8Most Valued Member
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13th Dec 2021, 06:56 AM #9Most Valued Member
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Have you considered making your own, that way you could have what ever diameter you need?
You could even make numerous arbors and interchange them in a Weldon style holder that can be purchased if desired.
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13th Dec 2021, 10:27 AM #10Golden Member
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I have a large number of 1" bored slitting saws that I bought with a batch of cutters at a clearing sale. It is a problem with horizontal milling, finding the cutters you need with the bore for the arbor you have. Would be handy to have 25mm, 1" and 1.25" arbors to make use of the cutters that come up on ebay etc. The chicom stuff seems mostly to be 25mm. Obtaining arbors in various sizes for HZ milling is not a cheap proposition as you have to have all the spacers to suit.
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13th Dec 2021, 10:57 AM #11Most Valued Member
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You would just make your own to suit.
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13th Dec 2021, 08:21 PM #12Senior Member
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Arbors
You would just make your own to suit.
Your chuck will not be absolutely centred with zero runout. Real life.
So if you make your arbor just by machining the end bit, you will find the slitting saw blade goes zing -zing-zing as it rotates. This will in fact work OK, provided you feed accordingly.
Instead, you should skim the arbor shaft AND the blade fitting at the end in one hit so they are as concentric as possible. A live centre at the other end (well aligned!) may help.
I have found the Chinese slitting saws work OK. It may be that they don't make them for the cheap end of the market.
Cheers
Roger
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13th Dec 2021, 08:54 PM #13
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14th Dec 2021, 11:42 AM #14Golden Member
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I thought standard metric arbor sizes were 22 & 27mm, I don't think I've ever seen a cutter with a 25mm bore.
For an ebay MOD 2 gear cutter with a 22mm bore I removed the dogs from one of these and it worked nicely:
https://www.ebay.com.au/itm/33409120...frcectupt=true
An important thing when using long horizontal arbors is to be sure the bore and faces of your spacers are perpendicular and clean.
Any error or dirt in these will cause a long arbor to bend when it's tightened up no matter how accurately it was machined.
Cheers,
Greg.
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15th Dec 2021, 09:28 PM #15Most Valued Member
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