On Fri, Feb 10, 2023 at 10:52 PM, mike allen wrote:
Thanks Al . I'm not sure why everyone says to get the metric
ones , being able to see the dimensions right next to each other like in
your Excell chart it looks to me that I'm fine having the inch set over
the metric set .? I've been keeping my eye on those collet chucks on the
big A & ebay , still on the fence on making one or buying . Thanks for
the pages . I think when I get a chuck I'll print that Excell page & get
it laminated & hang it near the? machines . A guy/gal could take one of
those collet chucks & make a adjust-tru pretty darn easy , your working
on the backplate anyways .
??? ??? Thanks all folks , for all the input .
??? ??? animal
On 2/10/2023 6:40 PM, ww_big_al wrote:
The Excel sheet I made up shows the comparison of metric vs imperial collets. I purchased the imperial ones. Cost more, but have size overlap the metric ones don't. The PDF is the ER40 I made for the SB-9A.
Al
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of mike allen
Sent: Friday, February 10, 2023 8:25 PM
To: [email protected]
Subject: Re: [SouthBendLathe] ER40 Collet nut
Nice Job . I'm debating if the ball bearing nuts are worth the extra $$ . I have a set of inch ER40 collets , wish I would have gotten the metric ones instead . MY thinkin is I need a 1 1/2 x8 ,
a 2 1/4 x 8 ( I think , I need to re measure ) & a pair of collet blocks . That would cover both lathes & the mill . I have a set of inch 3C collets for the SB 9A but just the standard inch sizes nothing between 16's . I'm also thinkin of gettin probably a set of ER 16's & that will take me down as small as I can see & then some . Are the wrenches all the same for the ER40 nuts or does that depend on the vendor ?
thanks
animal
On 2/10/2023 4:44 PM, Rick wrote:
I made er40 collet chucks for SB9 and SB13, in addition to square and
hex collet blocks. I bought a set of CDCO collets, which included a
nut and another nut from Shars. I see no difference in quality or
runout. Here is my handiwork.
I can¡¯t remember if you have a screw on chuck, but if so, make the collet chuck on the lathe it will be used on. There is not need for adjustment, as you cut the taper while it is screwed to the spindle. You will not get any more accurate than that.
