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Author Topic: I need to make 2 of these. But !!!  (Read 736 times)

ukmike

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I need to make 2 of these. But !!!
« on: September 25, 2018, 09:27:09 AM »

Hello all.


I need to make a pair of these but the size of the Brass bar is a bit much for my little lathe, it is on the very limits of its capabilities.
The jaws of the chuck are on the maximum just to hold it, although it doesn't mind turning it. The biggest problem is the sheer weight of the 37mm dia.
Brass bar


The picture shows what I need to make, the dimensions are 1/6th scale and I need to make 1/7th scale, so have worked out new dimensions the bring it to the slightly smaller size.
I reasoned that apart from facing off and turning it to round, which my machine can just about handle, there is no way that I can bore the required
centre hole which needs to be 17mm. Once that is done, then the weight of the bar will be greatly reduced and my lathe will be a happy little machine and I will be able to carry on.


So, my question is this, is there anyone willing and able to bore this out for me ? Obviously I will pay any expenses incurred to do this.
BTW, the grilles will be added later and silver soldered on, then the whole lot can be chromed.


Thanks for looking.


Mike.
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warspite

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Re: I need to make 2 of these. But !!!
« Reply #1 on: September 25, 2018, 10:18:34 AM »

might be out of my depth here, but if you have cut the outside flange, why not drill ever increasing holes through the centre until you can get the cutter to bore out the inside diameter, as the drill out will remove ever increasing amounts of material then the lathe should be able to handle the bigger drills, or take chamfered amounts to and from the middle till you get the depth required to then cut the inside bore before parting off.
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ukmike

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Re: I need to make 2 of these. But !!!
« Reply #2 on: September 25, 2018, 11:54:59 AM »

Many thanks for the suggestions Warspite
But as I said in the post, my small lathe is not quite up to the job, mainly due to the unsupported weight of the Brass bar and I can't use a tail stock centre to support for obvious reasons.
If I can get it bored out that will greatly reduce the weight which will then allow me to increase the bore slightly if necessary. Also, freehand drilling is out of the question for me.
At the moment I'm completely stuck.


Mike.
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Capt Podge

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Re: I need to make 2 of these. But !!!
« Reply #3 on: September 25, 2018, 12:09:01 PM »

Have you tried K & C engineering? They're on the longs industrial estate Gt. Yarmouth  - number and address is on their website - might be worth a call.


Regards,
Ray.
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ukmike

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Re: I need to make 2 of these. But !!!
« Reply #4 on: September 25, 2018, 12:49:13 PM »

Thanks Ray.
Will pop and see them, taking the Brass with me of course.


Mike.
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ukmike

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Re: I need to make 2 of these. But !!!
« Reply #5 on: September 25, 2018, 07:23:18 PM »

All sorted now Ray, Keith and Steve are nice people.
Many thanks for the information.

Mike.


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Capt Podge

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Re: I need to make 2 of these. But !!!
« Reply #6 on: September 25, 2018, 07:49:32 PM »

That's great news Mike - I was only able to find them through Google. I've not used this company before, it was your location that led me to them. This just goes to show that putting your location in your profile can be most helpful  O0 .
Glad you got sorted anyway.  :-))


Regards,
Ray.

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ukmike

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Re: I need to make 2 of these. But !!!
« Reply #7 on: October 18, 2018, 03:40:27 PM »

Hello.
Have made the first one and started on the second. Having never used or owned a lathe before I'm quite pleased with the results so far.
Lots of mistakes and cockups on the way but I'm certainly learning from them, should make the second one a little easier.
They are nowhere near perfect but when chromed should look somewhat better.
They are 2 part to allow the glazing to be fitted after chroming and then the grills fitted, thus making them watertight.


Here are some pictures of the progress so far plus the bits used.


Mike.



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mike_victoriabc

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Re: I need to make 2 of these. But !!!
« Reply #8 on: October 19, 2018, 03:57:37 PM »

Nice work!
Thanks for posting the photos
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ukmike

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Re: I need to make 2 of these. But !!!
« Reply #9 on: October 19, 2018, 04:19:17 PM »

Nice work!
Thanks for posting the photos


Thanks Mike.


Here are the completed parts ready for plating.


Mike.
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