Night Owl Chatterboxes - Part XXXIII!

• fudgester

  9 Jan 07, 19:04

  Originally posted by the Bear:

  home..
  
  and a huge bowl of laksa eaten for dinner too

  Bo jio?
• the Bear

  9 Jan 07, 19:07

  home-made some more
  
  

  Originally posted by fudgester:

  Bo jio?

• av98m

  9 Jan 07, 20:49

  A couple of practice food porn shots of my dinner
  
  
  
  
• fudgester

  9 Jan 07, 20:54

  Arrrgh... it turns out that the Aluminium 6061 T6 temper that we're using for the wheelchair that we're fabricating turns into T0 temper upon welding.
  
  What this means is that the welded joints will be about five times weaker than the rest of the chair. This necessitates a major redesigning of the whole frame to ensure that it doesn't fail.
  
  Neither our research nor advice from the dear old prof and the lab tech told us anything about this. We only knew about it after conferring with another two lab technicians earlier this morning.
  
  *$#^#$*@$.........
  
  
• the Bear

  9 Jan 07, 20:55

  uhh.. it happens to aluminium
• the Bear

  9 Jan 07, 20:57

  i got to go get a programme for Mac to do photographs
• av98m

  9 Jan 07, 21:00

  *goes off to join the flickr food porn forum*
• fudgester

  9 Jan 07, 21:02

  Originally posted by the Bear:

  uhh.. it happens to aluminium

  Right now our options are:
  
  1. Send the whole frame for heat treatment after welding. But that costs a huge crapload of tamales. and our budget is a pitiful $1500.
  
  2. Change to steel. Steel has an even temper (pardon the pun ) that does not change with welding. The techs claim that we can compensate for the extra density by making the tubes thinner by 1/3.
  
  The problem is that stainless steel is tough to weld, and mild steel is prone to corrosion. And besides, mild steel tubes of such thinness are hard to come by commercially in Singapore - we'd have to import it.
  
  3. Either increase the thickness or the outer diameters of the aluminium tubes that we're using.
  
  Looks like (3) is the only viable option right now.
• the Bear

  9 Jan 07, 21:04

  yeah.. by changing to steel and thinning it out to 1/3 will compromise the strength of the structure whatever it is...
  
  

  Originally posted by fudgester:

  Right now our options are:
  
  1. Send the whole frame for heat treatment after welding. But that costs a huge crapload of tamales. and our budget is a pitiful $1500.
  
  2. Change to steel. Steel has an even temper (pardon the pun ) that does not change with welding. The techs claim that we can compensate for the extra density by making the tubes thinner by 1/3.
  
  The problem is that stainless steel is tough to weld, and mild steel is prone to corrosion. And besides, mild steel tubes of such thinness are hard to come by commercially in Singapore - we'd have to import it.
  
  3. Either increase the thickness or the outer diameters of the aluminium tubes that we're using.
  
  Looks like (3) is the only viable option right now.

• fudgester

  9 Jan 07, 21:11

  Originally posted by the Bear:

  yeah.. by changing to steel and thinning it out to 1/3 will compromise the strength of the structure whatever it is...
  
  

  It's a sports wheelchair that we're designing. Specifically, for tennis.
  
  There are plenty of conditions to be met.
  
  1. Cost < $1500.
  2. Mass of frame < 10kg.
  3. Ease of adjustment for most athletes.
  4. Ease of conversion for normal everyday use.
  5. Ease of storage, packing and transportation
  6. Must not fail under normal loading conditions
  
  Arrrgh.
  
  *me goes off to drown my sorrows in Nescafe Mocha ice coffee*
• the Bear

  9 Jan 07, 21:15

  for the cost, aluminium is correct..
  
  oh well, you're better at this than me
  
  good luck
• Wanda

  9 Jan 07, 21:35

  
  
  The roast pork is soooo hugeeee!
• the Bear

  9 Jan 07, 21:36

  wondering when av will have his open house
  
  and wondering what i should cook
• Wanda

  9 Jan 07, 21:42

  I think your braised duck will be a fans' magnet...esp for those who's had a taste of it.
• laurence82

  9 Jan 07, 21:42

  arghhhhhhhhhhhhhhhhhhhhhhh
  
  decisions decisions decisions
• the Bear

  9 Jan 07, 21:44

  coming?
  
  thing about the duck is that i will have to stand over it for about 2 hours... the ribs i just bung it into the slow cooker and leave it for a long time
  
  i put to a vote one of these days
  
  also, it's actually kind of hard to find the giant type ducks these days.. i will have to go scout out the wet markets
  
  

  Originally posted by Wanda:

  I think your braised duck will be a fans' magnet...esp for those who's had a taste of it.

• Meia Gisborn

  9 Jan 07, 21:46

  Originally posted by fudgester:

  There are plenty of conditions to be met.
  
  1. Cost < $1500.
  

  That probably rules out fabricating the frame from some kind of composite material, like a carbon fiber-reinforced polymer.
• Wanda

  9 Jan 07, 21:47

  Originally posted by laurence82:

  arghhhhhhhhhhhhhhhhhhhhhhh
  
  decisions decisions decisions

  You seemed to have done very well in getting good job offers. What do you think contributed to it? Good results? Or good perf at the intw?
• av98m

  9 Jan 07, 21:48

  Originally posted by the Bear:

  wondering when av will have his open house
  
  and wondering what i should cook

  tentative dates are next weekend, or the weekend after next.
  
  braised duck, egg, and tau gua will suffice
  
  
• the Bear

  9 Jan 07, 21:50

  mmm.. according to Mad Labs, bamboo worms are better than beef...
  
  actually, bamboo worms are yummy
  
  but beef is yummier
  
  ohh.. appetizers are crickets... they're eating them
  
  i've tried locust.. not bad.. but too much exoskeleton...
  
  bamboo worms next.. weight for weight, double the protein of beef.. hmmm...
  
  
• Wanda

  9 Jan 07, 21:51

  Originally posted by the Bear:

  coming?
  
  thing about the duck is that i will have to stand over it for about 2 hours... the ribs i just bung it into the slow cooker and leave it for a long time
  
  i put to a vote one of these days
  
  also, it's actually kind of hard to find the giant type ducks these days.. i will have to go scout out the wet markets
  

  Erm...i don't know. You reckon a potluck is a good way to meet many ppl for the first time? And I'm lazy to cook... I went to a potluck gathering over the new year and I brought pork knuckles (ready cooked) and wine.
  
  Well, when av puts up a new thread on the potluck, you can put in your vote for duck or ribs.
• the Bear

  9 Jan 07, 21:52

  i'll say only duck then..
  
  braised eggs need about 3 days of stewing before it is good...
  
  and i'll need to get the duck...which means some shopping on a sunday one week before the day itself
  
  

  Originally posted by av98m:

  tentative dates are next weekend, or the weekend after next.
  
  braised duck, egg, and tau gua will suffice
  
  

• fudgester

  9 Jan 07, 21:53

  Originally posted by Meia Gisborn:

  That probably rules out fabricating the frame from some kind of composite material, like a carbon fiber-reinforced polymer.

  We considered that - but the costs are too great.
  
  Heck, if we had the dough, we would have gone for titanium.
  
  In the end, we decided that aluminium gives the best combination of weight, structural strength, corrosion resistance and cost.
• Meia Gisborn

  9 Jan 07, 21:55

  Originally posted by laurence82:

  arghhhhhhhhhhhhhhhhhhhhhhh
  
  decisions decisions decisions

  You're still unemployed, right? If so, you should have time aplenty to attend this event.
• av98m

  9 Jan 07, 21:55

  Originally posted by the Bear:

  i'll say only duck then..
  
  braised eggs need about 3 days of stewing before it is good...
  
  and i'll need to get the duck...which means some shopping on a sunday one week before the day itself
  
  

  I'll put up the thread by this weekend
  
  so far we have duck, char siew, and a salad