Material to make studs – EN1A??

[flatlineParticipant @flatline]

Firstly my apologies -as a similar question has recently been asked… However, my application is slightly different & I am very much a newbie, so…

 

I am running a Myford Super-7, and am upgrading the vertical-slide and vice to some newer more rigid items. I have bought some T-slot blanks, and would like to turn some studs to bolt the vice to the vertical-slide… As has been mentioned elsewhere I also have to hand some EN1A, which I can turn down to 7mm-dia to match the mounting holes in the vice, and then cut threads to attach to the T-slot blank & then use suitable nuts, washers, etc..

 

So my question is will EN1A have sufficient tensile-strength in this application?? I accept that it would be fair easier to go out and buy some bolts/studs ‘off-the-shelf’, but the idea of manufacturing my own parts to suit has far more appeal.

 

Many thanks in advance for any advice.

 

 

[SillyOldDufferModerator @sillyoldduffer]

Yes, go for it.  Though not a strong steel a 25mm diameter EN1A rod will support a weight of about 15 tons, plenty enough for studding on a lathe.

I expect you know of the need to ensure the thread end of a t-nut should be dinged to stop studs jacking them?   If jacking happens the stud can break the lathe slots because cast-iron is weaker than EN1a.

EN1A is unsuitable when safety matters.  Brakes and such need a higher safety factor, better corrosion resistance, and cut threads are relatively weak too.   As your lathe application isn’t safety critical, EN1a is OK.

Dave

 

 

[flatlineParticipant @flatline]

Dave,

 

thank you for your reply… I am a newbie, so not sure what you mean by “the thread end of a t-nut should be dinged to stop studs jacking them”…

Also, I am planning to run the T-slot ‘blank’ the full length of the slot (approx 4”) to spread the load a little… If you think this would help??

[howardbParticipant @howardb]

EN1A, also known as 230M07. EN1A is low carbon mild steel. Properties: free cutting, suitable for machining using both automatic and CNC machines.

Not suitable for bolts, studs etc it’s soft , not tough enough.

If you must make studs use something like EN8.

EN8 also know as 080M40. An unalloyed medium carbon steel. EN8 is a medium strength steel, good tensile strength. Suitable for shafts, stressed pins, studs, keys etc.

Or buy lengths of studding 8.8 grade,usual sizes are even numbers 6,8,2,10, 12 etc.

Or buy 8.8. or 10.9 grade hex head machine screws and modify the heads so they fit in the tee-slot.

[Julie AnnParticipant @julieann]

I am using EN3B for all the studs on my scale traction engine, as it is commonly used on full size engines:

It is much less prone to rust than EN1A.

Julie

[Charles LamontParticipant @charleslamont71117]

I disagree with Howardb. In the application as T-slot bolts no great strength is required and EN1A will be perfectly adequate.

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