Author Topic: Insert Boring Bars - any hints or tips please?  (Read 2505 times)

Offline Niels Abildgaard

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Re: Insert Boring Bars - any hints or tips please?
« Reply #30 on: September 01, 2018, 03:13:03 PM »
In middle Europe the on plus ultra is made by Ifanger

https://www.ifanger.com/system-ifanger-86.html

How many times diameter depth holes are in Your mind?

Offline propforward

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Re: Insert Boring Bars - any hints or tips please?
« Reply #31 on: September 01, 2018, 08:05:58 PM »
Hi Niels, thanks for the link - very intriguing.

I haven't really thought about depth vs diameter - obviously the greater the number of depth X diameter, the harder it will be to bore. Essentially, I just want to progress to boring holes with a lathe. I've avoided it for a long time, but it's a very important thing to be able to do confidently. My main interest of course is boring cylinders for model engines, but having got some confidence with it, I expect it will open up many more possibilities.
Stuart

Offline Niels Abildgaard

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Re: Insert Boring Bars - any hints or tips please?
« Reply #32 on: September 02, 2018, 09:18:41 AM »
I found an old picture of my collection of Ifanger(Swiss) and Komet(DDR) boring bars and heads.
In my expirience rigidity is the important thing.
I made my own boring bar holders,use the biggest possible boring bar with the shortest possible overhang.
I like carbide but the HSS Ifanger and Komet things are so easy to sharpen that I prefer them most of the time.

https://www.homemodelenginemachinist.com/attachments/im000178-jpg.45155/

Offline Stuart

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Re: Insert Boring Bars - any hints or tips please?
« Reply #33 on: September 02, 2018, 10:57:26 AM »
Sorry I cannot see the pic you need to be logged in to see it
My aim is for a accurate part with a good finish

Offline Niels Abildgaard

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Re: Insert Boring Bars - any hints or tips please?
« Reply #34 on: September 02, 2018, 11:53:05 AM »
Found some old pictures

https://imgur.com/E84bmkC

https://imgur.com/nleyOMO

https://imgur.com/CW9kfX8

My next generation boring bar holders had two paralel holes and were made from  60mm square mild steel
« Last Edit: September 02, 2018, 12:00:55 PM by Niels Abildgaard »

Offline Stuart

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Re: Insert Boring Bars - any hints or tips please?
« Reply #35 on: September 02, 2018, 12:35:54 PM »
Thank you for taking the trouble to make them viewable
My aim is for a accurate part with a good finish