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Thread: Your latest project
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21st July 2010, 08:18 AM #16Senior Member
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Hi Pipeclay,
Thanks for your advise, I have checked my head stock alignment and done the short bar test previously. I also have a short 12'' by 1'' bar that I have turned true between centres. My headstock is held down with four bolts.As can be seen by the original photos this longer larger diameter bar has turned true over its entire length and I have marked the position of the number one chuck jaw position, if I place it in the chuck in the correct position and use a centre,then use a dial indicator on it does this not achieve the same result?
Regards Bob
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21st July 2010 08:18 AM # ADSGoogle Adsense Advertisement
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21st July 2010, 09:21 AM #17Pink 10EE owner
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21st July 2010, 12:50 PM #18GOLD MEMBER
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The repeatability of the 3 jaw chuck is a big ?.
The only way that I have ever set a tailstock back on centre is to use a bar between centres.
Not saying that your method wouldnt work,its just as far as I am aware not normal practice.
Have been out of the trade for a few years now so things may of changed.
If you use the bar between centres you can also utilize it for setting tapers.
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21st July 2010, 02:02 PM #19Senior Member
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Pipeclay,
Thanks for your reply, I will check it out between centres the next time I have the chuck off, I normal do use that method but thought this method should work as well as long as I index the chuck and workpiece and the bar is parallel. I am just trying to save a bit of time checking my alignment after I move my lathe.
Regards Bob
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21st July 2010, 07:34 PM #20GOLD MEMBER
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The dial indictor is set up at centre height already. Couldn't you, check the error on the chuck, turn the chuck until the dial reads on the middle point, then move along and check the tail stock. Maybe not prefect but it would be pretty close, of course it would depend on what YOU think of as pretty close. Or am I missing something?
Stuart
P.S. my mill shuold be here tomorrow
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22nd July 2010, 06:38 PM #21Distracted Member
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- May 2010
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- Lower Lakes SA
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Took a break from building the power hacksaw to commission my milling attachment. I'd welded up an angle bracket out of 130 x 16. Of course it distorted and when I tightened the bolts the cross slide would bind. Took it to the local machinist for doctoring last week, got it back today. Problem solvered. Finally, I can do some milling! There's no vertical feed as yet, except by loosening the T-screws and sliding the vise, but it's still a Great Leap Forward from clamping stuff in the toolpost. Cunningly (if I say so myself) I've placed the 6 mount holes on a perfect grid so I've got lots of options. This bracket will be the basis for several attachments I'm planning. I'm certainly happy with the rigidity so far. A better vise is on the shopping list though. And a collet chuck, and.....
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22nd July 2010, 09:54 PM #22Dave J Guest
Not sure if you have thought of it but, you can bolt the compound to that bracket to give you a vertical slide. Then make up another bracket to mount the vice to the compound.
Dave
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22nd July 2010, 10:40 PM #23Distracted Member
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Thanks DaveJ, yes I thought of it, but for reasons I won't bore everyone with here, the conversion is not straightforward in my case. I might ask advice on that in another thread sometime.
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23rd July 2010, 05:12 PM #24Novice
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Here's one I've just finished
This is the Argus double acting oscillator from 'The best of Model Engineer - vol 1' Still needs to be mounted on a plinth etc. Very happy as the last time I touched a lathe was in high school back in the 70's
I'm based in Bayswater, Western Australia and am using the combined AL60 Lathe/Mill from Hare and Forbes
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24th July 2010, 09:32 PM #25SENIOR MEMBER
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Nice work Pete.
I've never attempted a model steam engine, but I guess it gave you a great sense of achievement when you finished it.
Sterob
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24th July 2010, 11:14 PM #26GOLD MEMBER
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This is my latest. Made from a kit of stock and plans from ebay. As you can see it isn't finished yet. Shame it doesnt work . I have a couple of ideas to try and get it working.
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26th July 2010, 11:08 AM #27Novice
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HI Sterob,
Once it runs it is a great feeling. However I think there was enough in the scrap box after this first engine to have probably made a second. What you are seeing in the final product is the third cylinder, second set of cylinder covers and glands and I believe a whole lot of errors cancelling each other out
Initially needed around 20psi to work but now that it has run for a bit it is happy on only 4-5psi.
Currently making a horisontal mill engine and it that also turns out OK will possibly try a locomotive for a third machine - possibly the 'Blowfly' which has the simplest mechanics of all the engines I have seen.
Regards
PeteLast edited by WA Pete; 26th July 2010 at 11:10 AM. Reason: I need to type slower :)
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6th August 2010, 05:32 PM #28Novice
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- Jul 2010
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- Perth WA
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Suum Cirque
Here's the parts I have made for Suum Cirque, from the 'Best of Model Engineer - vol 1'
All just about done except the base plate drilling and assembly.
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6th August 2010, 07:49 PM #29GOLD MEMBER
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Thats coming along nicely WA Pete. Is the cyclinder cast? The valve face is on the top of the cyclinder as we are looking at it I assume?
Stuart
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6th August 2010, 08:46 PM #30SENIOR MEMBER
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- Mar 2010
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- Nth Qld
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- 715
Here's a photo of a 16x30mm nameplate I made for some guy in WA for his model steam engine:
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