Boring Bar Suggestions?

[Lee Roberts]

Another option is to make yourself a longer boring bar "make a tool, to make a tool" kind of thing? Somthing like 25mm OD 100mm long plus the lenth for your tool holder, take out what you can with long drill bits, again weld extensions on those if you need to, dial the OD in first, flip it, clock it, bore again.

Its only ali but, go slow, take your time, take a final "spring" cut.

You can do it

.Me

[irving2008]

how big is your lathe if it only takes 10mm tooling? to bore 188mm you're going to need at least 400mm (16") movement on the toolholder unless you use a series of tools or move the tool in the toolholder either of which has implications on the accuracy of the bore dia end to end (and how would you measure it?). To use one fixed tool implies something capable of 18 - 20" between centres, your average 7x14 isn't going to cut it (excuse the pun)!