[Dr_evil]

Discovery to defender gearbox convertor, simple enough if you have a lathe. This is it about 50% complete, two of the three lips are turned and then it needs a hole drilling and tapping along with a 5/8th hole in either end with a 3/4" solid in the to separate them

Started life as a 50mm bar and turned to the correct diameter

I'll make a separate thread detailing it incase anyone needs to search in the future but I used some pinched designs (essentially going to compound the info)

 

[Thor1950]

welds look like ****, tool bit ground wrong, feed was to fast, out feed was to fast on facing the end and shoulders, finish should of been like glass

 

[Dr_evil]

welds look like ****, tool bit ground wrong, feed was to fast, out feed was to fast on facing the end and shoulders, finish should of been like glass

Not on a lathe when turning fast.......

Welds are solid, edges were chamfered and wire feed and penetration were set correctly by the tech to make sure so troll off

 

[GRATCH]

Not on a lathe when turning ****.......

You do make me laff, 'showin off' your machining 'skills':hysterically_laughi:hysterically_laughi

 

[Thor1950]

you do make me laff, 'showin off' your machining 'skills':hysterically_laughi:hysterically_laughi

+1

 

[Dr_evil]

You do make me laff, 'showin off' your machining 'skills':hysterically_laughi:hysterically_laughi

Turn it fast 400 rpm, lh knife tool, auto feed and then for a proper finish just dump it onto the bench grinder means it takes #### all time

 

[Freelaner]

Ahem.................your parting tool needs sharpening

 

[Thor1950]

Ahem.................your parting tool needs sharpening

The tool needs to learn how use correct tooling

 

[GRATCH]

Turn it fast 400 rpm, lh knife tool, auto feed and then for a proper finish just dump it onto the bench grinder means it takes #### all time

400rpm fast?ound:ound:ound: What feed rate? mm per rev or metres per min?

Bench grinder proper finishound:ound:ound: Do you mean cylindrical grinder or centreless grinder?

Face, rough turn, finish turn- surface finish like glass: 2 maybe 3 minutes. Other end face, drill, bore, drill & tap: 4-5 mins. Takes less than feck all time.


Give it 25+ years then think about being an engineer

 

[Freelaner]

The tool needs to learn how use correct tooling

it's all a question of tolerances................it doesn't need to be over machined to do it's job

 

[Dr_evil]

Ahem.................your parting tool needs sharpening

Haven't used a parting tool all I had was a left hand knife tool as all the final year guys had taken the other lathes and tools as they get priority over us for the formula student builds

 

[Thor1950]

400rpm fast?ound:ound:ound: What feed rate? mm per rev or metres per min?

Bench grinder proper finishound:ound:ound: Do you mean cylindrical grinder or centreless grinder?

Face, rough turn, finish turn- surface finish like glass: 2 maybe 3 minutes. Other end face, drill, bore, drill & tap: 4-5 mins. Takes less than feck all time.


Give it 25+ years then think about being an engineer

:hysterically_laughi:hysterically_laughi

 

[Freelaner]

Haven't used a parting tool all I had was a left hand knife tool as all the final year guys had taken the other lathes and tools as they get priority over us for the formula student builds

ah ok, revs too low and feed too high then

 

[Thor1950]

Haven't used a parting tool all I had was a left hand knife tool as all the final year guys had taken the other lathes and tools as they get priority over us for the formula student builds

still not a good excuse, but you got plenty for every situation

So what is that hunk of round stock supposed to be and do????

 

[Dr_evil]

400rpm fast?ound:ound:ound: What feed rate? mm per rev or metres per min?

Bench grinder proper finishound:ound:ound: Do you mean cylindrical grinder or centreless grinder?

Face, rough turn, finish turn- surface finish like glass: 2 maybe 3 minutes. Other end face, drill, bore, drill & tap: 4-5 mins. Takes less than feck all time.


Give it 25+ years then think about being an engineer

Cylindrical grinder that's the one, couldn't think of the name!


Had about 20 mins to try and get one sorted so was moving fast, feed rate can't remember what it was set to but I don't need a good finish hence the words may finish on grinder definitely not a 2 to 3 minute job when you have to stop and check the size with calipers evey few cuts

Had to take it from 50mm to 25.4mm so working fast will give a rough finish taking 1mm cuts each time

 

[Dr_evil]

still not a good excuse, but you got plenty for every situation

So what is that hunk of round stock supposed to be and do????

If you read instead of trolling you'd know by now

 

[Dr_evil]

ah ok, revs too low and feed too high then

Possibly but I work with the one I'm given on a Friday, as said this isn't hi precision its not a moving part all it is is lengthening a rod

 

[Thor1950]

If you read instead of trolling you'd know by now

If you would keep it on one thread would be easier to follow.......... You have this project like a pile of horse **** on a road............ all over the place

 

[Thor1950]

Possibly but I work with the one I'm given on a Friday, as said this isn't hi precision its not a moving part all it is is lengthening a rod

a rod extender like this

Penis Extenders & Photo Reviews (penissize) on Pinterest

 

[Dr_evil]

No like extending an FTC part