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Small Milling problem

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Wolfie02/02/2012 10:44:09
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502 forum posts
Thanks all managed it with a slitting saw.
 
How do you get the nice rounded ends on the fork?
Tel02/02/2012 11:01:05
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157 forum posts
28 photos
Using filing buttons is the simplest way
Ian Hewson02/02/2012 15:48:50
354 forum posts
33 photos
Hi
Whilst I agree that using filling buttons is a good way of forming round ends, I tend to use a linishing machine, this is a belt type of sander for use on metal.
I know this will produce gasps and mention of abrasive dust affecting machines etc, but after spending 6 months in a ROF apprentice training shop 50 odd years ago with worn out files and old emery cloth, it taught me one thing, "if you can use a machine, do so" it's much easier.
I have rounded hundreds of ends in 1/4 mild steel by putting a pin at right angles into a scrap peice of metal and clamping this at the required radius from the belt, than rotating against the belt.
Works as a good metal remover and leaves a good polished surface.
My grinding is done away from my covered up machines, followed by a good vacumming.
JasonB02/02/2012 16:23:33
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25215 forum posts
3105 photos
1 articles
Or do as I do and use the filling buttons and a linisher, just make sure they are fixed on well as the linisher spins them up quite fast!!
 
J
Ian Hewson02/02/2012 16:33:23
354 forum posts
33 photos
Hi
Shpuld have mentioned that the pin is vertical, in line with the abrasive band, so all the cutting force is downwards.
Ian
David Haynes02/02/2012 17:13:38
168 forum posts
26 photos
I find rounding of corners gets difficult with such as an anchor link 3/4" long x 7/32" wide. It can be done but the fingers are get scraped a bit. Any favourite way of dealing with small components?
Dave
Tel02/02/2012 20:28:11
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157 forum posts
28 photos
Still with filing buttons and a bit of manipulation in the vice. I find filing of small components much easier than trying to do then any other way.
 

Jon02/02/2012 22:52:18
1001 forum posts
49 photos
I would do as Tel said, i used to do a lot more intricate stuff about the size of the small hole ending around 7 thou thick.
Do each roundover in two halves and rotate as necessary. Above 7 mins polished up.
Hold on the protruding central lug so looking down the hole.
 
Grinding and sanding to size, you cant see what you are doing plus the tendency to grind on the .iss and generate friction, Yup gets hot quick with nothing coming off.
 
Ian Hewson03/02/2012 17:01:15
354 forum posts
33 photos
Thats the beauty of this great hobby, there are many ways for you to try and to find out which method works for you.
This forum is a graet source of ideas, I try new things to me and find some to be a revalation.
Never close your mind to a new idea or be afraid to ask a silly question.
Ian
David Haynes04/02/2012 12:19:27
168 forum posts
26 photos
With the clevis that Tel has shown, I find it takes ages to set up so that the saw is correctly located to cut the slot. I am still trying to make it a quick and accurate process but usually take too long or the slot is wrong and the job scrap.
Dave
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