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14th Jun 2019, 08:37 AM #31Member: Blue and white apron brigade
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If you would like to have a few imperials on hand consider getting MT collets instead of ERs. When I got my mill I already had ER32 metrics for my lathe so Anorak Bob gave me a few MT collets. 1/4, 3/8, 1/2" plus 6 and 12 mm. These are really handy because they are shorter and leave a bit more WWR (wiggle work room), especially on small mills and lathes
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14th Jun 2019, 09:58 AM #32Most Valued Member
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- Nov 2007
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- melbourne australia
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Lucky you. Is this what you are talking about? https://www.amazon.com/gp/product/B0...CBPE368U&psc=1
You can get them locally in MT2 and MT3. https://www.ausee.com.au/shop/category.aspx?catid=13Chris
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14th Jun 2019, 10:17 AM #33Member: Blue and white apron brigade
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Yes but they are of course MT4.
This smaller MNT3 subset are good value
https://www.amazon.com/dp/B01BH5Q7GM/ref=dp_cerb_1
You can get them locally in MT2 and MT3. https://www.ausee.com.au/shop/category.aspx?catid=13
This 11 piece set of imperials from CTC look like good value - shame about the freight costs.
MORSE TAPER #3 IMPERIAL COLLET SET (11 PCS) #F78 | CTC Tools
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14th Jun 2019, 10:23 AM #34Banned
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- Jan 2019
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- Adelaide
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- 78
I bought an ER25 set which, I think, top out at 16mm. My lathe has a 25mm bore, a MT2 tailstock taper and 280 swing. I went for the ER25 because I use drills in them rather than work. It takes a fair amount of tightening to do the collet chuck up, so much so I added to the length of the chuck spanner. My lathe's drill chuck takes up to 16mm after that it's step down drills, hence the ER25 collets. Mine were sourced on ebay, the cheapest I could find. Excellent quality and I never had any problem with burrs.
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14th Jun 2019, 10:45 AM #35Most Valued Member
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- Nov 2007
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- melbourne australia
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A ball bearing nut might help with that if you don't already have one. It shouldn't be difficult to tighten them.
https://www.ausee.com.au/shop/item.aspx?itemid=1304Chris
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14th Jun 2019, 04:02 PM #36Gear expert in training
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- Aug 2008
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- Melbourne
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- 34
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+1 for ball bearing nuts.
If you want to stick with plain nuts, a drop of air tool or light machine oil on the tapered surface that presses against the collet (as well as a drop or 2 on the thread) can help keep things rotating more freely.
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