Gallery, Projects and General > How do I??

keyways.

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mexican jon:

--- Quote from: wheeltapper on September 30, 2016, 08:44:43 AM ---I am in the process of converting my mini mill to belt drive.

I've made the small pulley apart from the keyway.

the bore is 9mm dia by 25mm long , deep ,whatever,, the keyway needs to be 118 thou wide.

how the heck do I cut this without a keyway broach which I haven't got and can't afford.

I've also got the large pulley to do when I've made it.

answers on a postcard  :).

cheers

Roy.

--- End quote ---

Is it really 118 thou  :scratch: or is it 3mm  :scratch:

The small pulley normally has a 9 mm bore with a 3 mm keyway. The large pulley has a 30 mm bore with a 5 mm keyway

You are only up the road from me (I'm in Great Yarmouth) you would always be welcome to borrow the use of my Broaches  :thumbup: I have a fairly comprehensive selection of Marlco's.

wheeltapper:
Hi Jon
yes they are 3mm and 5mm , its just that the plans I have are in imperial and I prefer thous.

thanks for your kind offer however (1) I dont have a press. (2) I'd be scared of breaking them. and (3) getting anywhere in that direction is a nightmare with all the NDR roadworks.

thanks anyway, I'll bodge something. :lol:

cheers
Roy.

Will_D:

--- Quote from: Jasonb on September 30, 2016, 09:49:26 AM ---You can do it in the lathe.

--- End quote ---
Great photos Jason

Are you using a macro lens?

Jasonb:
Just a little Sony cybershot for the second pic and the other one was a while ago on a Minulta Dimage 7, both just on auto and let them do their thing.

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