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 Post subject: broaching with a vice?
PostPosted: Sun Dec 11, 2016 2:33 pm 
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I want to make a hex in some 3mm steel plate, but have very basic tools. I was wondering if I could do this in a vice? I have an old steel vice which is very strong and if necessary could slip an extension pipe over the handle. Would something like this work with the length cut down to 6 inches or so:

http://www.ebay.co.uk/itm/HSS-11mm-AF-D ... SwyLlXphua

I know they are designed to be used in a press, but can't see why it would not work in a vice?

Another idea I thought was to grind a taper on an allen key and force that through with the vice. But on second thoughts a quality Allen key will probably cost as much as that broach (e.g. Snap-on - don't think cheap Chinese would be up to it). Plus all I would have to do is cut the broach down and I am all ready to go.

Alternatively I could drill a hole and get filing - but I can't be bothered!

Do you think cutting the broach down that I linked to and using in a vice would work?


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PostPosted: Sun Dec 11, 2016 4:58 pm 
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The vice won't be aligned very well and will likely snap the broach. Also you don't want to cut down the broach, you will make the job a lot harder. A drill press will likely do a fair job for a one off, especially if you are happy to do a little pre-filing of the shape and just let the broach tidy it up.


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PostPosted: Sun Dec 11, 2016 6:29 pm 
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Thanks for your reply. Are you sure you would be able to get the required force with a drill press and not end up damaging it?

Also would you buy the broach, or try something with an allen key?

Another I idea I had was to use a dremel with those tiny wheels. Although I would need a very steady hand and it would probably end up using loads of discs.


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PostPosted: Sun Dec 11, 2016 7:15 pm 
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Adam32 wrote:
Thanks for your reply. Are you sure you would be able to get the required force with a drill press and not end up damaging it?

Also would you buy the broach, or try something with an allen key?

Another I idea I had was to use a dremel with those tiny wheels. Although I would need a very steady hand and it would probably end up using loads of discs.


You can generate a lot of force with a drill press, not as much as with a vice of course but certainly a lot. How many holes do you need to do? If it is just a handful I would file them out, if we are talking 5 or more I would use the drill press and broach (with some rough filing just to get it started), if we are talking dozens of holes I would cough up for an arbour press and broach.


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PostPosted: Sun Dec 11, 2016 8:34 pm 
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In view of your reply I am tempted to buy an arbour press. What's the minimum press that would do the job? If you have any links that would be great.


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PostPosted: Sun Dec 11, 2016 9:20 pm 
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Adam32 wrote:
I am tempted to buy an arbour press. What's the minimum press that would do the job? If you have any links that would be great.


Adam32 wrote:

My philosophy with the vehicle is if I can't find it standard off the shelf, I mod it myself. I refuse to pay stupid prices.


Just how much would the correct part cost compared to buying an arbour press and the rest of the tooling required plus your time? :scratch:

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PostPosted: Mon Dec 12, 2016 9:02 pm 
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What is the part, just a piece of flat 3mm sheet?

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PostPosted: Thu Dec 15, 2016 8:52 am 
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Hi,

You could of course go the whole way and make your own broach;



Why make a job difficult when you can make it virtually impossible? Broaches can be made to suit the job in hand; pulling a broach is preferable to pushing a broach. I tend to take the hardest route; easy is boring.

Hope the video is of interest.

Kind regards, Col.

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