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Thread: What did you learn today?
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9th Jun 2021, 04:57 PM #856Most Valued Member
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Mk1 you should be able to work out the correct inserts from here Insert Designation Chart - provides ANSI and ISO designation code definitions for carbide insert shapes, relief angles, tolerances, chipbreaker codes, hole types, size values, thickness values, radius values, wiper lead angle, wiper clearance angle,
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9th Jun 2021, 05:51 PM #857Gear expert in training
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That's just lazy of them. Can you post some pics of the cutter and inserts? There's probably 3 or 4 insert types used by pretty much all the basic face mills, you can confirm with a ruler and protractor for size and clearance angles but I reckon it should be fairly easy to narrow it down.
Gear cutting specialists and general engineers www.hardmanbros.com.au
Fine pitch gear cutting from 0.1 Module www.rigear.com.au
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9th Jun 2021, 06:58 PM #858Diamond Member
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9th Jun 2021, 06:59 PM #859Diamond Member
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9th Jun 2021, 07:12 PM #860Gear expert in training
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Gear cutting specialists and general engineers www.hardmanbros.com.au
Fine pitch gear cutting from 0.1 Module www.rigear.com.au
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9th Jun 2021, 09:07 PM #861Golden Member
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The large diameter (~200mm?) is a FAGERSTA hR 268-8160
The smaller (~100mm) is a SANDVIK COROMONT
The grey insert is for the smaller cutter and is approx. 13 x 3mm square with a substantial rake (relief?).
The gold insert is 13 x ~4.5mm with zero angle.
Big2.jpgBig1.jpgBig3.jpgInsert1.jpgBig4.jpgSmall1.jpgInsert2.jpgSmall2.jpgSmall3.jpgSmall4.jpg
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9th Jun 2021, 09:24 PM #862Most Valued Member
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I dont think id run either of those tools in my mill with the dinged up tapers. Might need new shanks.
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9th Jun 2021, 09:45 PM #863Diamond Member
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I'm pretty sure the sandvik takes SPKN1203 inserts, pretty sure i have a bigger version down the shed, will check on the weekend.
Not sure about the other one, but they will be ISO inserts as both face mills are 80/90's vintage. I have some old catalogs on the weekend, unless someone else works it out first.
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9th Jun 2021, 10:00 PM #864Gear expert in training
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Gear cutting specialists and general engineers www.hardmanbros.com.au
Fine pitch gear cutting from 0.1 Module www.rigear.com.au
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10th Jun 2021, 12:11 AM #865Golden Member
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Thanks for the info lads.
Cask- i have only run the small one as that came already in the mill when I bought it. I plan to stone and clean them both.
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12th Jun 2021, 11:16 AM #866
That going to an Engineering Suppliers closing sale can empty a bank account.
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25th Jun 2021, 07:37 PM #867
Bandsaw running rough
Who would have thought a V belt could make such a difference.
My Hare Forbes BS-4A band saw has worked well for years, until the last month. The motor started jumping about like a demented frog while the machine was cutting. I discovered the driven pulley was loose on its shaft but fixing that did not help. I tried different tension on the belt. Better if the belt was really loose. There was a little "dust" inside the drive belt cover but the belt was intact with no knobs, bumps or flapping bits and looked OK.
In the end I thought a new belt was the go.... but it was not an "A" "B" or "C" section and the numbers on the existing belt were not converted into anything useful by "Mr Search Engine". The Hare Forbes manual helpfully described part 112 as "belt".
Finally I recall some wise words from these forums that the Grizzly manuals were worth a read and the one for the same machine (G0622 4"x6" metal cutting bandsaw) said the belt was a 3L220 (a fractional horse-power belt, 3/8" wide, 22 inches long -- new series to me but measurements matched the one I had) so a new brand-name one was ordered.
The saw now runs as smooth as silk.
cheers
David
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A society grows great when old men plant trees whose shade they’ll never sit in. (Greek proverb)
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25th Jun 2021, 08:02 PM #868Senior Member
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David, where did you buy the belt?
Regards,
Tom
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25th Jun 2021, 08:09 PM #869
no link apart from being a customer https://www.aimsindustrial.com.au/ga...belt-8400-1220
cheers
David
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A society grows great when old men plant trees whose shade they’ll never sit in. (Greek proverb)
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26th Jun 2021, 10:55 AM #870Member: Blue and white apron brigade
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Took some more scrap brass and copper to the scrap metal dealer yesterday.
Copper is paying $9.05 /kg
Copper insulated cable is $3:15 /kg.
When I got home I stripped some pieces of kettle cord and flat 3 core and found that by the time you strip the insulation off a copper cable you are typically left with about 42% of the original weight of cable as copper.
This means if you strip the copper out of the cable you will get about $3.80 per original kg of cable (insulation plus copper) so you are getting about 65c/kg for stripping the cable - hardly worth it for domestic cable. For stuff like welding cables it will probably be well worth doing.