Jump to content

Random slightly cool stuff you built but not worth its own thread, thread


h4nd

Recommended Posts

  • Replies 1.3k
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Used to have to do that monthly to the logic board in my Macbook, worked flawlessly until I put it in a glass roasting dish with a convex base, just twisting the board enough that half the surface mount parts fell off. 

Used a strip of thin solder next to the board to get a guess on temp

  • Like 3
Link to comment
Share on other sites

On 2/19/2018 at 21:58, NickJ said:

Used to have to do that monthly to the logic board in my Macbook, worked flawlessly until I put it in a glass roasting dish with a convex base, just twisting the board enough that half the surface mount parts fell off. 

Used a strip of thin solder next to the board to get a guess on temp

Yep, watch the radiant from the element, temp can be higher than on the dial.

  • Like 1
Link to comment
Share on other sites

4 hours ago, h4nd said:

Yep, watch the radiant from the element, temp can be higher than on the dial.

That jogs the brain, I used tin foil to shield the plastic sockets etc, should have been ok, but I wasn't keen on taking too much risk.

  • Like 1
Link to comment
Share on other sites

  • 2 weeks later...
On 2/19/2018 at 21:58, NickJ said:

Used to have to do that monthly to the logic board in my Macbook, worked flawlessly until I put it in a glass roasting dish with a convex base, just twisting the board enough that half the surface mount parts fell off. 

Used a strip of thin solder next to the board to get a guess on temp

Unfortunately solders can melt at vastly different temps. Iv had some that didn't want to melt at all with iron until i put normal solder on top (may have been a different issue?)

Link to comment
Share on other sites

9 minutes ago, flyingbrick said:

Unfortunately solders can melt at vastly different temps. Iv had some that didn't want to melt at all with iron until i put normal solder on top (may have been a different issue?)

Apart from specialised cases, all electrical solders have a melting point around 200degC (true eutectic is 190 from memory) the biggest issue is getting heat into a joint, if you have two convex surfaces (iron tip and joint) then the heat path is minimal, a dab of solder increases the heat path area and all is happiness. In extreme cases, the eutectic may shift from compositional changes, this can happen in brazing, where once a part is flowed, it takes a higher temp to release the joint, but i'm unsure if this is documented in solder?

  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...