Hi,
I'm having trouble parting off.......... yesterday I broke 2 blades..........
I have a Seig SC$4 lathe fitted with a Seig QCTP. This has a rather strange parting off holder that uses 14mm blades. The only blades I can find for this are simple lengths of HSS. The blades have no side relief so I assume my problem is that the blade is jamming due to expansion as it heats up (I was using water soluble cutting fluid, and the blade was square and on centre). I would like to junk this and get a decent parting off tool.
I anticipate most of my work will be aluminium, mild steel and brass, with only a very odd piece of stainless thrown in.
Last week I bought a pair of Diamond Tool Holders (tangental tool holders) from
http://www.eccentricengineering.com.au/ and have found them to produce superb results - I'm getting a mirror finish on aluminium, so I was wondering if anyone has experience of their inverted parting system?
http://www.eccentricengineering.com.au/index.php?option=com_content&view=article&id=31&Itemid=45Are there other alternatives that can be suggested?
I spent several hours last night reading every thread I could find - including one 15 pager! But it seems that there is no one answer. I've read that the tool should be on centre, above centre, below centre, that inverted is great, inverted sucks, normal sucks, normal is best, rear is best, rear sucks etc etc. All very confusing for someone new...
I'm prepared to buy a good tool, but they are not cheap, so I was wondering what the latest opinions are? Don't want to buy the wrong thing....
cheers
Gary