Connecting Rod

Connecting Rod

This topic has 10 replies, 6 voices, and was last updated 16 October 2018 at 18:31 by JasonB.

Viewing 11 posts - 1 through 11 (of 11 total)

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15 October 2018 at 17:49 #376095
VC
Participant
@vc44480
Hi all

Some advice please

Want to try and use my home made CNC mill Mk I Steig

to make a connecting rod for a 3 1/2 loco

Would like to know what SS flat bar to buy Size 1/4 *1 *71/2

and were to buy it

Have looked on Flea Bay 316 Marine grade will this be OK or to hard ???

Thank you
Advert

15 October 2018 at 17:49 #1762
VC
Participant
@vc44480
15 October 2018 at 18:53 #376101
John Rudd
Participant
@johnrudd16576
Macc models stock stainless flat bar…..

https://maccmodels.co.uk/materials-metal/stainless-steel-sections/stainless-steel-flat-316.html
15 October 2018 at 21:06 #376124
Neil Wyatt
Moderator
@neilwyatt
See if you can get some 303 as it's easier to machine.

Neil
15 October 2018 at 21:53 #376132
Philip Powell
Participant
@philippowell34749
I think you will find 316 or 316L much easier to machine. 316 cuts nicely but can be a bit stickey when tapping. 316 will also give a lovely finish especially if you use coolant.

Phil.
15 October 2018 at 22:11 #376133
Ian P
Participant
@ianp
Posted by Philip Powell on 15/10/2018 21:53:13:

I think you will find 316 or 316L much easier to machine. 316 cuts nicely but can be a bit stickey when tapping. 316 will also give a lovely finish especially if you use coolant.

Phil.

Easier that what?

In my experience 316 is much easier than Titanium
15 October 2018 at 22:18 #376134
Ian P
Participant
@ianp
Neil is right. Use 303 SS, it machines beautifully, even easier to work than leaded steel. Its a bit harder to get the deep polished lustre as is possible on 316 but thats probably not applicable to a con rod.

Ian P
16 October 2018 at 16:06 #376204
VC
Participant
@vc44480
Thanks very much for the reply's

Looks like 303 is the way to go but nobodies is saying where to get it from

Mac has 316 so if I can't get the 303 will give that a try

Cheers
16 October 2018 at 17:01 #376212
Ian P
Participant
@ianp
Odd that nobody has told you where to buy 303 SS from, its not a state secret or anything.

Where you get it depends on your own preferences and location etc. My first port of call would be Noggin End followed by M-Machine but there are probably about 8 or 10 suppliers serving the model making fraternity.

Ian P
16 October 2018 at 18:21 #376237
Neil Wyatt
Moderator
@neilwyatt
Take look here:

http://www.model-engineer.co.uk/shopping/

Neil
16 October 2018 at 18:31 #376242
JasonB
Moderator
@jasonb
303 is not that common in flat which the OP wants unless he likes making a lot of swarf, 316 flat is easy enough to get hold of
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