Gallery, Projects and General > Oooops!
Novice question Re lathe
Fergus OMore:
This is not intended to be a definitive or exhaustive reply but------------------- :doh:
Go into Aldi or somewhere similar and buy a cheap sh1te double ended grinder. Throw the wheels at the local Moggy. Go into Cromwell Tools and get a pair of replacement white wheels perhaps 60 and 80 grit and make up a pair of rests - from B&Q wood. Get a hold of old Ian Bradley's book on Shaping and Lathe Tools ( Map) and follow up his words and music.
It isn't wonderful stuff as it was written way back in 1949 but you should have tools which will cut metal.
Anzaniste:
Amongst all the invaluable advice offered I notice that no one has mentioned the importance of setting the height of the tool tip.
One of the simplest methods is trapping a thin ruler between the tool tip and the work (apply just enough pressure to hold up the ruler). If the tip is too high the top of the ruler will lean away from you and if it is too low it will lean towards you. When it is spot on the ruler will be vertical.
Alternatively line the tip up with the tail stock centre.
There are other methods that require equipment that is very simple but I guess that at this stage you do not possess. As you gain your experience you will come across a method that takes your fancy and that's the way you'll go.
Always set the tool height before you start turning. If you have a quick change tool they have built in height adjustment. Failing that have a selection of packing pieces to put under the tool. Funnily, when I first started out my "bits and pieces" box never seemed to yield the right packing pieces but it did not take long to accumulate a good collection. The arrival of a quick change tool post solved that .:thumbup:
Good sharp tool at the correct angles are essential but the cutting angle is only true when the tool point is exactly on the centre height of the lathe.
piper1:
Thank you so much for all the great advice now time to put them all into practice :beer:
Fergus OMore:
I've just taken a moment to open my battered copy of 'Bradley' and yes, he constantly keeps showing 'centre height' in his diagrams of set ups
One trick that he doesn't show nor have anyone else in this post is the humble black felt tipped waterproof pen which if carefully used will show where tool edges have become blunt.
I really think that that as a beginner- with only distance learning that you should make a Bradley honing jig. OK it is dated and was written for a bygone age( Mine) but it can be altered to touch up a carbide tool which probably needs different angles than high speed steel. A so called fine 'diamond' file will work wonders on a blunt tool.
piper1:
--- Quote from: Fergus OMore on September 04, 2013, 03:16:00 AM ---I've just taken a moment to open my battered copy of 'Bradley' and yes, he constantly keeps showing 'centre height' in his diagrams of set ups
One trick that he doesn't show nor have anyone else in this post is the humble black felt tipped waterproof pen which if carefully used will show where tool edges have become blunt.
I really think that that as a beginner- with only distance learning that you should make a Bradley honing jig. OK it is dated and was written for a bygone age( Mine) but it can be altered to touch up a carbide tool which probably needs different angles than high speed steel. A so called fine 'diamond' file will work wonders on a blunt tool.
--- End quote ---
Hi is any of this information available on the internet, done a little search but I didn't really find anything.
Thank you
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