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Hoffman dividing head

Index pin

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Bob Birkett29/08/2020 18:52:28
6 forum posts
5 photos

Hi

Does anyone out there have a schematic of the small Hoffman dividing head please? The plunger pin on mine is broken. I must be missing something simple but I cannot find a way to dissemble it. Any diagrams would be greatly appreciated.

Thanks in advance.

Thor 🇳🇴30/08/2020 13:21:56
avatar
1766 forum posts
46 photos

Hi Bob,

Welcome to the forum. It seems Hoffman is still in business, have you tried to contact them? Lathes.co might have a manual.

Thor

Edited By Thor on 30/08/2020 13:25:15

Tony Pratt 130/08/2020 17:04:16
2319 forum posts
13 photos

Pretty sure there will be a cross pin holding it together.

Tony

Bob Birkett30/08/2020 17:23:17
6 forum posts
5 photos

Thanks Thor. I'm awaiting a reply from them, still.

Tony, thanks also. I have extracted the top pin that holds the outer shell in place but there doesn't appear to be anything other than magic holding it together beyond that. I'm going to make one and then Mr and Mrs angle grinder will make a visit and report back for future handle lovers.

Neil Lickfold31/08/2020 10:49:20
1025 forum posts
204 photos

Can you post some pictures of your assembly please. I repaired one recently, and want to make sure it is the same model.

Neil

Bob Birkett31/08/2020 17:26:33
6 forum posts
5 photos

'Can you handle it'

is the albums name Neil.

Thanks

not done it yet31/08/2020 22:13:31
7517 forum posts
20 photos

There might be an outside chance that the piece shown is one piece? If so, it may be a case of machining away the broken tip and replacing with a new one. Not a great issue, I would have thought?

I expect you may need to be seated if it is one piece and needs replacing by the manufacturer. I know of at least one tool supplier that offers ‘kits’ for around £35, but are likely metric, these days (and likely of lesser quality).

Neil Lickfold01/09/2020 08:50:12
1025 forum posts
204 photos

There is a wire clip that stops the plunger coming out. You need to remove the wire clip, then it will come out the bottom. That is how our one is.

Bob Birkett01/09/2020 20:22:31
6 forum posts
5 photos

Thanks Neil. I appreciate you taking time. I know which bit you are talking about.

Mark Davison 101/09/2020 21:06:04
134 forum posts
38 photos

I have one and dismantled the same bit earlier this year, for a different failure though. Does this help?

20200901_210135.jpg

Bob Birkett01/09/2020 21:28:46
6 forum posts
5 photos

Brilliant pic Mark. How does the plunger (part 3 from the top) fit into the body (part 2)? Is it pressed? Do you have a pic of the right hand side, as we look. of both those parts please.

Mark Davison 101/09/2020 22:03:55
134 forum posts
38 photos

Pinned and pressed

20200901_220219.jpg

Mark Davison 101/09/2020 22:13:16
134 forum posts
38 photos

Ignore the small off centre hole in the top of the 2nd part down. I had to drill that to knock the remains of a broken locating pin out.

Bob Birkett01/09/2020 22:21:08
6 forum posts
5 photos

Fantastic. Thanks Mark. I'll take a look.

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