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23rd Jun 2020, 10:05 PM #1Most Valued Member
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Crawford Multibore Type B collets
Gday All.
I have 12 Crawford Multibore Type B collets that have been laying around in my shed for some time. There is also what I believe to be a retaining nut with them.
First I thought about moving them on but today I've been thinking of maybe making a chuck for them.
I have a nice chunk of cont cast CI that would be suitable for the body.
So I've been searching online for a while tonight trying to find out some dimensions of a suitable chuck.
So far all I've found is a gazillion ads for every form of collet known to man I think.
However so far no actual dimensions of a chuck. I'll keep looking but I was wondering if anyone here had any info/leads/links etc etc.
It wont be that hard to work out the internal sizes from the collets, but a diagram with the sizes would be nice to have a look at.
New, these collets are big money and even used on UK ebay they start at around $90aud each.
collets 001.jpg collet nut.jpg
Any help would be greatly appreciated.
peter
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23rd Jun 2020, 10:17 PM #2Most Valued Member
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- Jul 2016
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Peter I use similar style pratt burnerd collets, happy to give dimensions on my chuck if it helps. Does the nut have a keyway on it?
Sent from my SM-G973F using Tapatalk
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23rd Jun 2020, 11:11 PM #3
Hi Peter
Here you go
Collets, Crawford, 3J, Plain Bore, Multibore, Spring, MultisizeBest Regards:
Baron J.
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24th Jun 2020, 09:06 AM #4Most Valued Member
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That would be great if you could do a rough sketch for me. Thanks. No rush.
The nut I have does not have a keyway. I don't even know for sure if its the correct nut for these collets either. It was in with the collets when I got them.
I don't know if I will even use these collets if I make a chuck for them. I just thought as I don't have any actual machining projects planned, (apart from fixing a few bits and pieces on the machines as I have been doing) it would be a good project to bring my machining skill level back up after many years of not doing any.
peter
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24th Jun 2020, 09:08 AM #5Most Valued Member
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24th Jun 2020, 04:38 PM #6
Search results
That is partly due to Google optimizing search results towards sales.
Try using a different search engine such as the quaintly named DuckDuckGo.
https://duckduckgo.com/
Findlay.
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24th Jun 2020, 04:59 PM #7
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