Cheaper boring tooling suitability

[Andrew TinsleyParticipant @andrewtinsley63637]

Hello Ketan and Tony,

I tried your advice and find that the finish is now much better. I will try the 0.8mm tips for my next trial. So it shows that you need to ask people who know about the product!

I can still get a better finish with HSS but the difference isn't so great after following good advice. I have a pal who uses carbide tipped tooling for everything including plastic and Perspex! He can't use HSS because he simply cannot grind a decent tool! I suspect I may finish up using carbide tips for roughing out ad swop to HSS for the final finish. let me see how the 0.8mm tips work out.

Andrew.

[Douglas JohnstonParticipant @douglasjohnston98463]

In recent years I have been using the high positive rake inserts designed for cutting aluminium. I use these on a Myford Speed 10 and despite the fact that it is a small machine this combination works very well. I find these inserts work equally well on aluminium and steel (including stainless ) .

Doug

[Chris Evans 6Participant @chrisevans6]

Douglas, I assume you are using "GT" as opposed to "MT" tips for your results. I find the tips made for aluminium (the "GT" ones) give excellent results on mild steel for finish.

[Douglas JohnstonParticipant @douglasjohnston98463]

Hi Chris, yes the tips I use are the GT type. A while back a seller on ebay (engineering-r-us ) were selling Taegutec tips in lots of 50 and I dismissed them for ages thinking I did not need 50 of each type and they would be very expensive. I then started to see what price they were selling for and discovered that a lot of 50 were going for anything between £30 and over £100.

​ Being a cheapskate I kept bidding low and ended up with a few lots of 50 with an average price of less than a pound for each tip. These tips have transformed my cutting but you have to be careful since they do chip easily if you do not take care, but I am in the happy position of having enough tips to see me out.

​ Unfortunately the above supplier has not listed on ebay for a while as far as I can see and maybe they were just selling off bankrupt stock at any price they could get.

Doug

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