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New ways to skin a cat

Square hole & Rose index.

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Oldiron16/01/2021 17:07:45
719 forum posts
23 photos

Never too old to learn I say. Saw this on the interweb today. Cannot say that I ever remember seeing a Rose index in use. Handy method if you have no broaches. mrpete video.

Next shop project maybe ?

regards

Bo'sun17/01/2021 10:48:06
349 forum posts

Interesting. Watched it last night.

Hopper17/01/2021 11:02:55
avatar
5148 forum posts
114 photos

Looks pretty handy. I have not come across the Rose Index before. I only found one supplier online, Lakeshore Carbide in the USA. $149 for the 2" version MrPete is using. Wow!!!

But it looks simple enough to make one that would do the job.

David Colwill17/01/2021 12:20:37
722 forum posts
38 photos
Posted by Hopper on 17/01/2021 11:02:55:

Looks pretty handy. I have not come across the Rose Index before. I only found one supplier online, Lakeshore Carbide in the USA. $149 for the 2" version MrPete is using. Wow!!!

But it looks simple enough to make one that would do the job.

5c or er32 collet blocks are a good option if you have them. I also use vee blocks for larger stuff but this is limited to 90 degrees.

Regards.

David.

Iain Downs17/01/2021 12:25:44
741 forum posts
649 photos

I was slightly amused to find that the best way of making a square hole involved buying a $150 rose index rather than a $150 broach...

However, it does look like a handy piece of kit - though quite expensive (even before the carriage).

It's gone on my todo list!

Iain

Graham Titman17/01/2021 12:39:04
avatar
98 forum posts
17 photos

Or buy John Stevenson er block from Arc Euro little bit cheaper than importing from the states and do the same job

Oldiron17/01/2021 13:19:51
719 forum posts
23 photos
Posted by Graham Titman on 17/01/2021 12:39:04:

Or buy John Stevenson er block from Arc Euro little bit cheaper than importing from the states and do the same job

BUT can you get 2" through a JS block? I cannot. smiley Also a Rose block does 45 - 60 & 90 degrees.

Cheapest way is to make yoiur own.

regards

Oldiron17/01/2021 13:24:32
719 forum posts
23 photos
Posted by Iain Downs on 17/01/2021 12:25:44:

I was slightly amused to find that the best way of making a square hole involved buying a $150 rose index rather than a $150 broach...

However, it does look like a handy piece of kit - though quite expensive (even before the carriage).

It's gone on my todo list!

Iain

I think if you were to buy a Rose block (better still, make one) it would turn out cheaper than buying a set of broaches & dies and a press to use them.

regards

Dr_GMJN17/01/2021 13:52:24
827 forum posts

May well have misunderstood what's going on, but why is turning through exactly 90 degrees so important for drilling the pin holes?

Wouldn't 'about 90 degrees' be OK, or really any angle so long as the drilled pin holes didn't break into the square hole?

Nicholas Wheeler 117/01/2021 13:56:39
501 forum posts
28 photos
Posted by Oldiron on 17/01/2021 13:19:51:
Posted by Graham Titman on 17/01/2021 12:39:04:

Or buy John Stevenson er block from Arc Euro little bit cheaper than importing from the states and do the same job

BUT can you get 2" through a JS block? I cannot. smiley Also a Rose block does 45 - 60 & 90 degrees.

Cheapest way is to make your own.

a few laser cut plates pinned together would do it

not done it yet17/01/2021 16:30:48
5581 forum posts
20 photos

Anything wrong with a rectangular block and a precision adjustable angle measurer? Some will have angle gauge blocks, some won’t need any great precision, etc.

Hopper17/01/2021 17:12:21
avatar
5148 forum posts
114 photos
Posted by Iain Downs on 17/01/2021 12:25:44:

I was slightly amused to find that the best way of making a square hole involved buying a $150 rose index rather than a $150 broach...

However, it does look like a handy piece of kit - though quite expensive (even before the carriage).

It's gone on my todo list!

Iain

Maybe because he got sent one to do a review on?

Joe Pie has a cheapo homemade idea here at the 5.00 minute mark, but you have to glue it to the job. But you can buy a lot of glue for $149.

Old Crock17/01/2021 20:04:03
31 forum posts
18 photos

Why not print one? Go to Thingiverse and search Rose Index. Inspired by Mr Pete’ video.

John

Roger Best17/01/2021 20:49:34
215 forum posts
31 photos

That's a useful principle, thanks, you only need the facets you need for a job so a jig is easy.

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