Hi,

Could anyone help me out? I need to turn some mild steel down to a set diameter and add a specific internal bore diameter. A friend tried to help but his boring bar was too large. Would add a picture, but can’t upload, I can e-mail a pic. Internal diameter is just under 14mm outer diameter is under 25mm and length is about 65mm don’t have the pic to hand as amusing my phone but will update with exact dimensions.

I am in the peterborough area (Yaxley) if that makes any difference.

Thanks in advance,

Chris

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Originally posted by mccsp
Hi,

Could anyone help me out? I need to turn some mild steel down to a set diameter and add a specific internal bore diameter. A friend tried to help but his boring bar was too large. Would add a picture, but can’t upload, I can e-mail a pic. Internal diameter is just under 14mm outer diameter is under 25mm and length is about 65mm don’t have the pic to hand as amusing my phone but will update with exact dimensions.

I am in the peterborough area (Yaxley) if that makes any difference.

Thanks in advance,

Chris

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Hi,

Thanks for taking the time to read my post.

I am moving my gearstick towards the handbrake on a type 9 gearbox. Previously tried one of the gearshift extension kist but didn't like it so making a simpler one. This is the link piece to extend the gearshift input shaft.

Total length 65mm

External diameter 22mm

Internal daimeter 13.97mm


Shooter,

I will U2U you my e-mail address where I can send you a pick if that helps.

Regards,

Chris

If the tolerance of the inner bore is critical you are probably going to have to use a reamer rather than a boring bar - lucky to get a 10mm bar in that small a hole and at 65mm stick out that's going to flex!

Are the tolerances really that tight? If not then drill it you can do +/- 0.1mm with a drill

If the offer above stalls then let me know and I will be able to help.