Line Boring (demo)

This topic has 13 replies, 8 voices, and was last updated 29 June 2015 at 20:54 by Jon.

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26 June 2015 at 18:15 #195030
Nick_G
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@nick_g
.

Having (as yet) never done any line boring I found this series of 3 video's by Kieth Fenner most informative for the principles involved.

Anyway, thought I would link here as it may be of interest to others. **LINK**

I do like Kieth's no-nonsense straight talking video style in the productions he does.

Nick
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26 June 2015 at 18:15 #17757
Nick_G
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@nick_g
26 June 2015 at 18:47 #195035
JasonB
Moderator
@jasonb
I don't think you will need one quite so big even if you do go with that Clarkson Compound
26 June 2015 at 19:45 #195039
Nick_G
Participant
@nick_g
Posted by JasonB on 26/06/2015 18:47:10:

I don't think you will need one quite so big even if you do go with that Clarkson Compound

.

Errrrrrrrrrr. I 'might' want to upscale it.

Talking of Clarkson castings. How much coinage ish are they as I cannot seem to find a price list for them, even on the pdf download.

Nick
26 June 2015 at 19:51 #195043
JasonB
Moderator
@jasonb
Not quite sure, they had a few of the smaller ones at Guildford last year and had priced them at just below the similarly sizes Stuart offerings. Not even sure if they have the larger ones available yet but can ask them next week as they are at Guildford show again.

You could also look at the larger marine engines from Reeves and Engineers Emporium have a 2.25bore x 2" stroke "beaver" in both single and compound, I'll send you their catalogue.

J
26 June 2015 at 21:25 #195051
Nick_G
Participant
@nick_g
Posted by JasonB on 26/06/2015 19:51:48:

I'll send you their catalogue.

J

.

There is certainly some impressive stuff in there.

But I think I would also need bigger machine tools for much of it.

Nick
27 June 2015 at 01:33 #195075
Paul Lousick
Participant
@paullousick59116
A great video explaining techniques for line boring, making a boring bar and holding the work by a professional machinist. BUT, like many amateur videos, way too long. The 3 part video could have been condensed to 1. (sorry for being so critical)
27 June 2015 at 06:58 #195082
John McNamara
Participant
@johnmcnamara74883
I did not watch the entire set this time but did catch one idea that I will try… He wrapped a boring bar in sheet lead to stop it singing. That I am going to try. Many is the time I have hung various bits of material on a bar to try and stop it vibrating. but always out of the work the sheet lead slides in right near the tool.

You learn something every day. Keith's videos are great, not only for the current topic but the little secrets that pop up along the way.

Anyway it sure beats Television!

Regards
John
27 June 2015 at 08:22 #195088
JasonB
Moderator
@jasonb
Nick, could you be tempted by this in the future? 17" tall, only casting is the 8" flywheel.
27 June 2015 at 09:17 #195089
Saxalby
Participant
@saxalby
I agree with Paul – far to longwinded video's.

I have used multicore solder coiled round the boring bar. One or two layers depending on space available – works just fine.
27 June 2015 at 11:31 #195107
Paul Lousick
Participant
@paullousick59116
Although the video was a little long, I did learn something about boring bars. And the use of lead or solder to stop vibration. Never too old to learn something.

Paul.
27 June 2015 at 18:16 #195161
OuBallie
Participant
@ouballie
Hmmm!

I need to show him how to organise his tools me thinks

Safe him walking all those miles searching!

Geoff – Mixed bolt sizes & metric used on my Austin Seven
29 June 2015 at 14:20 #195342
Steve Pavey
Participant
@stevepavey65865
Posted by Saxalby on 27/06/2015 09:17:42:

I agree with Paul – far to longwinded video's.

Many of the US videos are over-long – much better are the ones by Abom79, which get straight to the point. There are others much more long winded than even this one, with really good content but everything repeated ad nauseam. No names, but the one I have in mind you could brew several cups of a well known brand of tea while waiting to get past the lengthy intro talking.

Edited By Steve Pavey on 29/06/2015 14:21:52
29 June 2015 at 20:54 #195373
Jon
Participant
@jon
Still using two I made when had an ML7 23 yrs ago for a specific scary, flimsy expensive job.

26" long bar single point cutter is at front left and has to go all the way through 330mm, start bore 20.1mm opened out to 23mm. Have to keep opening up and sending down, fingers holding and supporting the bar flexing/chaffing.
**LINK**

Nothings going to be rigid that length at that diameter.
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