Author Topic: Maiwald Makeover........  (Read 27793 times)

fcheslop

  • Guest
Re: Maiwald Makeover........
« Reply #30 on: August 26, 2012, 05:41:14 PM »
Hi David, sorry to hear the lathe died.Did you manage to get some graphite just cannot remember the dia you needed
cheers

Offline Dean W

  • Full Member
  • ****
  • Posts: 200
  • A balanced diet is a bag of M&Ms in each hand...
    • Home Shop Projects
Re: Maiwald Makeover........
« Reply #31 on: August 26, 2012, 08:44:24 PM »
David, did you get the new motor for your lathe yet?
Dean
In beautiful N. Idaho, U.S.A.

Shop Projects:
http://www.deansphotographica.com/machining/projects/projects.html

Offline Stilldrillin

  • Full Member
  • ****
  • Posts: 678
  • Staveley, Derbyshire. England.
Re: Maiwald Makeover........
« Reply #32 on: August 27, 2012, 08:58:44 AM »
Thanks for your kind words and interest, Chaps.

Stuart. From yesterday, we're up and running in, again.

Zee. The lathe started off as a Chester Conquest 7 x 12, around 8 years ago. It's now had a few adventures, additions and subtractions, along the way!

Frazer. Some graphite is on it's way. To join the K&S brass tube, and the 30mm cast iron. Several options available now!

Dean. That motor did eventually arrive......... Smashed! ...... Build story on Modder, eventually.


For the moment, the distractions continue........ Mrs. Drillin an me spent a lot of last night sitting alongside a trolley in A&E, again......

David D
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

Online Stuart

  • Full Member
  • ****
  • Posts: 1738
  • Tilchestune UK
Re: Maiwald Makeover........
« Reply #33 on: August 27, 2012, 10:21:26 AM »
David

Hope the patient on the Trolly gets sorted out ASAP


Stuart
My aim is for a accurate part with a good finish

Offline Stilldrillin

  • Full Member
  • ****
  • Posts: 678
  • Staveley, Derbyshire. England.
Re: Maiwald Makeover........
« Reply #34 on: August 27, 2012, 01:07:01 PM »
Thanks for your much appreciated concern Stuart! 

But, I don't want to make much of it......
I only used that bit of info, to show the many and varied directions I'm supposed to be going in, all at the same time! 

I managed to slip into the shop for 10mins this morning, and fitted the 5" chuck, with the flywheel casting.
Just a quick facing cut at around 500rpm.........




That will do for now! Just like a proper, grown up lathe.......   

David D

David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

Offline swilliams

  • Full Member
  • ****
  • Posts: 896
  • Canberra Australia
Re: Maiwald Makeover........
« Reply #35 on: August 27, 2012, 02:00:42 PM »
Hi David - I've come late but now caught up on your thread. A good little read it is too - will keep following.

Steve

Offline Stilldrillin

  • Full Member
  • ****
  • Posts: 678
  • Staveley, Derbyshire. England.
Re: Maiwald Makeover........
« Reply #36 on: October 05, 2012, 05:41:53 PM »
Thanks for all your kind comments, hint n tips etc. Over the past, too long.......  :facepalm:

I've had a couple of gentle adventures, which you might like to see.......

The story of the lathe rebuild.....   http://madmodder.net/index.php/topic,7560.0.html

And, I had the time to post some gonna do's, I've done...... Also, complete some more...   http://madmodder.net/index.php/topic,7643.0.html


But! the big news is....... I've got Maiwald things underway again!  :whoohoo:

Assembled together what I could find........



Cast iron. Graphite. Brass tube. Also, 2 packs of M2 grubscrews...... Dunno what they are for!  :-\


And set up, to drill for cylinder sleeve......




Then...... The phone rang!  :facepalm:

No time to get back to it, until next week. But....... We're progressing, at last! 

David D


« Last Edit: October 07, 2012, 09:33:16 AM by Stilldrillin »
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

Offline Stilldrillin

  • Full Member
  • ****
  • Posts: 678
  • Staveley, Derbyshire. England.
Re: Maiwald Makeover........
« Reply #37 on: October 08, 2012, 08:46:12 PM »

I drilled out the cylinder with 7/16" drill, held in a 12mm R8 collet. Didn't think R8 collets would compress willingly, that far.....

The 7/16" K&S tube needed it's o/d reducing by a couple of thou. So, I turned a mandrel......




Leaving the o/d a little rough, for grip, stuck it in place using my favourite sleeve retainer.......




Will drill through to the displacer chamber tomorrow, when it's cured.


Question time now. Re-graphite pistons.......

I've never turned a piston, without some oil grooves.

Do I still groove a graphite one. Or, leave it plain?   

David D
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

fcheslop

  • Guest
Re: Maiwald Makeover........
« Reply #38 on: October 08, 2012, 09:11:49 PM »
Hi David, All the ones Ive made are just plain no grooves. Brown paper bag or card is good to polish them to size
good luck and switch the phone off :LittleDevil:
cheers

Bluechip

  • Guest
Re: Maiwald Makeover........
« Reply #39 on: October 08, 2012, 09:13:19 PM »
Dave SD

I too thought graphite was self-lubricating  ... no oil ... no oil grooves .... ???

Never used graphite, where did you get it, Noggin end ???

Dave BC

fcheslop

  • Guest
Re: Maiwald Makeover........
« Reply #40 on: October 08, 2012, 09:18:55 PM »
Noggin end but also try art shops much cheaper

Bluechip

  • Guest
Re: Maiwald Makeover........
« Reply #41 on: October 08, 2012, 09:25:55 PM »
Art shops ??? What sort of Art shops ??

The 'Slap-Dab' aisle at B&Q or something more exotic ??

I suspect they do charcoal sticks etc. but why Graphite ??
Where should I be looking?

The only thing I know it's used for is melting gold/silver.

Dave BC

EDIT looked on Amazon ... could only find this

http://www.pullingers.com/P~782259~Caran-d%27ache-Grafcube-Graphite-Stick-15mm-9B

Piccy don't look very cubic to me    :disappointed:
« Last Edit: October 08, 2012, 09:35:02 PM by Bluechip »

fcheslop

  • Guest
Re: Maiwald Makeover........
« Reply #42 on: October 08, 2012, 10:17:50 PM »
Have a look for Cretacolor graphite sticks they go from 5/16 t0 5/8 dia go for H grade or HB you use them for drawing :ThumbsUp:
Try the www.heatoncooper.co uk/ studios as a guide

Offline Stilldrillin

  • Full Member
  • ****
  • Posts: 678
  • Staveley, Derbyshire. England.
Re: Maiwald Makeover........
« Reply #43 on: October 08, 2012, 10:31:12 PM »
Dave, Frazer.
Not for lubrication purposes! I wondered if there might be some pressure sealing advantage, to have grooves.......

Here's the big bar. For a future project, mebbe.   http://www.ebay.co.uk/itm/Graphite-Bar-/200808907492


And, here's the long thin un.   http://www.ebay.co.uk/itm/360482547877?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

Thanks for the polishing tip, Frazer!  :ThumbsUp:

David D
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

fcheslop

  • Guest
Re: Maiwald Makeover........
« Reply #44 on: October 08, 2012, 10:52:56 PM »
Hi Dave, don't know if grooves would be an advantage or not.
Thanks for the links they will be handy.Oh and I forgot to say but you probably already know,try and rig a vac cleaner up as its filthy stuff and the dust gets everywhere.
Nice to see you making headway again I seem to be going backwards at the moment but it happens :fos:
kind regards
frazer