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Member postings for blowlamp

Here is a list of all the postings blowlamp has made in our forums. Click on a thread name to jump to the thread.

Thread: lathe belt
06/12/2010 16:56:04
Looks like it could be a good candidate for a Poly-V belt conversion, if you can get the right length.
 
Martin.
05/12/2010 12:16:18
Gordon.
Would it be a big job to change the pulleys and belt for something more current?
 
Martin.
Thread: Myford Squareness.
04/12/2010 23:11:41
Myford have a fixture - much like a long angle plate, which uses the relevent vertical shears to reference it at an accurate 90 degrees to the lathe bed, ie. nominaly parallel to cross slide movement. The saddle is then scraped on it's lower vertical guiding surface, so that a dial gauge when affixed to the cross slide, shows a very small positive reading when moved from the front towards the rear of the lathe. So in effect, the whole saddle/cross slide assembly is turned very slightly anti-clockwise when viewed from above, with everything within that assembly being machined at (nominally) 90 degrees and no special allowance is machined into the tee slots or other faces as this in built 'error' is so small.
 
Martin.
Thread: Endmill, Slot Drill
01/12/2010 12:58:44
The whole parting-off on a Myford thing has always intrigued me too.
My thoughts are that the problem is largely down to chip crowding in the groove as well as a slightly flimsy compound assembly.
So using coolant can help flush the chips, but as the chip is at least as wide as the slot, (but probably wider due to plastic flow) it can still get jammed and cause a cram-up. Turning the tool upside down and mounting at the rear allows gravity to help remove the swarf, but I find that the modern insert style tooling can be used conventionaly in the front position with confidence as the tips are designed to shrink the width of the swarf and thus enable easy ejection.
 
Martin.
Thread: levelling
29/11/2010 23:25:08
Terry.
There is no fundamental reason to have a lathe bed level in the sense that one would ensure a shelf or kitchen worktop is level.
The engineers precision level is used across the bed as a means of comparing readings between the headstock and tailstock ends of the machine until the difference either disappears, or becomes so small as to become negligible.
At that point, the bed is without significant twist, and can be relied upon to be accurate in use.
However, other benefits may become apparent from having a machine bed level, such as the correct drainage of coolant and being able to setup surfaces of castings etc with a level, secure in the knowledge it will be parallel the the machine bed.
 
Martin.
Thread: Chinese lathes
27/11/2010 18:39:06
Quote
"... Lifes too short for this kind of carry on....especially considering that John S, Tony, I and some others do not really need to be fighting WARCOs battles...
 
...Come to think of it, we now even have a belated confirmation from the original contributor that it wasnt really about a battle in the first place!..."
End of Quote
 
Then, there was a blinding flash - a puff of smoke...
...and the lights came on!!
 
Oooh-eer! I've gone all light headed! - This is how Pam Ewing must have felt when she woke from the worlds longest nightmare, to find Bobby safe and well and taking a shower.
 
Martin.
27/11/2010 12:04:46
Would somebody be so kind as to point me towards the text of impending legal action, by the owner of this lathe, as I seem to have missed all the fun?
 
Martin.
Thread: PRECISION , ACCURACY and QUALITY
27/11/2010 11:45:56
Do you feel the question has been asked with sufficient PRECISION to allow me to provide an answer of acceptable ACCURACY that would be of a suitable QUALITY?

Edited By blowlamp on 27/11/2010 11:47:47

Thread: Which New Lathe; choices, choices...
26/11/2010 21:04:30
Jason and Terry.
Thanks for the information on the Warco lathe.
Terry... I'm still sat next to Lathejack, peering at a soggy M300 lathe brochure, whilst crying my eyes out and thinking about what could have been with the £38.50 I have in my pocket.
 
Martin.
Thread: Chinese lathes
25/11/2010 00:25:19
Lathejack's reply in this post http://www.model-engineer.co.uk/forums/postings.asp?th=45283 hints at how long he has owned his lathe.
 
I must say that I see his Album pictures as being valid and valuable to the members of this forum as they show the reality of his particular situation.
He hasn't embarked on a rampage of insults against anyone and has only shown what he has found to be at fault with his equipment, as received from the manufacturer/vendor.
 
Martin.
Thread: Which New Lathe; choices, choices...
24/11/2010 23:08:59
Terry.
No, I don't think this lathe comes with Power Cross Feed, nor any change to the Tumbler Reverse mechanism.
While I'm here though, can you tell me what kind of chuck fitting your new Warco lathe has?
 
Martin.
Thread: Chinese lathes
24/11/2010 18:01:20

My perception of Lathejack's contribution is this:-
He has a photo album of pictures titled Chinese torture.
They are accompanied with descriptive text, in which he briefly explains what he has found and subsequently rectified.
The first picture is headed New 1330 lathe, very poorly.
Which seems to suggest the machine isn't second-hand and certainly looks like it hasn't been used, although it could be be just new to him.
Other text within the album appears (to my eyes) remarkably unbiased and simply serves to describe what faults he found and then did to put them right.
I don't see him making any accusations - only passing on his findings.
It doesn't look like Lathejack started this thread, so I can't see that he's obliged to contribute to it.

Martin.

Edited By blowlamp on 24/11/2010 18:06:57

Thread: levelling
24/11/2010 15:46:33
That IPhone app sounds pretty good Terry, but I think you'll probably agree that Peewee is going to need a proper engineers level to ensure than no twist remains once his lathe is installed.
 
Martin.
Thread: Sundials
24/11/2010 15:34:20
Hi Hawker John.
If you need some g-code generating, then send me a message and I'll have a look for you.
 
Martin.
Thread: Clarkson Chuck - removing the centre
20/11/2010 17:49:36
If it really is in that tight, then I would be thinking about setting up a toolpost grinder and either just giving it a lick in position on the miller - or probably easier in the lathe. 
If it's got a Morse taper shank and can go straight in the headstock spindle, that would be an ideal way of doing the job.  
 
Martin.
Thread: Which New Lathe; choices, choices...
16/11/2010 23:11:43
In view of some of the evidence here http://www.lathes.co.uk/wabeco/index.html and here http://www.lathes.co.uk/wabeco/page8.html of these machines being of quite basic construction, I'd be more inclined to try Myford, as something like this  http://www.myford.com/200301.html is probably cheaper and easier to tool up.
 
Martin.
15/11/2010 14:04:34
Av8r.
OK, so you've narrowed it down to just the 3 (possibly 4) machines, as you seem to have ruled out all Chinese made machines. We now need to know which features are causing  you concern, out of the lathes on your shortlist.
 
 
Martin.
11/11/2010 20:23:33
The Comet is a slightly smaller machine than the DB-10V, but does have the advantage of having power crossfeed as well as a rather useful looking top slide that has a larger than usual range of travel. The top slide also has machined tee-slots for mounting tooling/accessories, or workpieces for milling. I don't recall seeing that combination on any other lathe in this price bracket.
 
One other feature that is a 'must have' for me is continuously variable spindle speed, as I find being able to tune out chatter whilst parting off or drilling is very convenient.
 
Martin.
11/11/2010 14:14:58
 
Having seen the Chester lathe, I came away quite impressed with its construction and finish.
 
A hardened bed is nice to have, but plenty of lathes don't have one, for instance Myford and Boxford to name two and It doesn't seem to put many people off owning them.
 
The main cause of wear is by allowing swarf to get between the moving parts, so keeping things clean and lightly oiled is the way to go.
 
Remember that you will spend a fortune equiping your new purchase for work, so don't blow all your funds on just the lathe.
 
Keep us updated with your thoughts.
 
Martin.
Thread: Milling PCB
09/11/2010 16:36:33
You'll be able to do that job in CamBam.
There's nothing to touch it at the price, in my humble opinion.
 
Martin.
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