DIY Heat Gun Top Heater with DIY Nozzle

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Re: DIY Heat Gun Top Heater with DIY Nozzle

Postby code0102stinks » Wed Apr 03, 2013 11:58 pm

jamesfreddie wrote:Where did you find the guide on building this?

Can you put a picture up of the actual top heater?

How did you build the nozzle?


A friend that goes by Hybridkid was building a heat gun top heater, so I got the idea of modifying a heat gun with PID controller and LM317 based
voltage regulator to control the fan speed for air from him. From that, I didn't go from any plan or instructional. I designed and built it myself.

I built the nozzle from 1.5" steel square tube on the inside and 2" square tube for the outer tube. Found a piece of 1.5" round thin walled pipe for
the coupler. Nozzle just snugly slides on and off the heat gun.

Here is a pic with the heat in view. That cone nozzle in this pic was awful. Even modded it with longer tube and still was bad. Ditched it for DIY nozzle.
Image
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Re: DIY Heat Gun Top Heater with DIY Nozzle

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Re: DIY Heat Gun Top Heater with DIY Nozzle

Postby DrunkenNinja » Thu Apr 04, 2013 10:54 am

Did you built the heat gun holder as well Code?

It looks quite user friendly and easily adjustable. I bit the bullet in the end and bought a Aoyue 618a cause I could not mess with the stand I had any longer, I was spending way too much time adjusting the height where I needed it.

Thanks for sharing your pics mate.
Last edited by DrunkenNinja on Thu Apr 04, 2013 1:34 pm, edited 1 time in total.
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Re: DIY Heat Gun Top Heater with DIY Nozzle

Postby BGA Rework Store » Thu Apr 04, 2013 11:09 am

what i would love to see code is a vid of it in action , giving us a demo of its features and functions
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Re: DIY Heat Gun Top Heater with DIY Nozzle

Postby DrunkenNinja » Thu Apr 04, 2013 1:29 pm

tonyjandc wrote:what i would love to see code is a vid of it in action , giving us a demo of its features and functions


:+1:
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Re: DIY Heat Gun Top Heater with DIY Nozzle

Postby code0102stinks » Thu Apr 04, 2013 7:04 pm

DrunkenNinja wrote:Did you built the heat gun holder as well Code?

It looks quite user friendly and easily adjustable. I bit the bullet in the end and bought a Aoyue 618a cause I could not mess with the stand I had any longer, I was spending way too much time adjusting the height where I needed it.

Thanks for sharing your pics mate.


The adjustment portion of my top heater holder is from an overhead projector. Works well. That part that connects the heat gun to the
adjustment portion is a double swivel mount like they use mount equipment inside emergency vehicles.

I will make a vid someday, but I have very little time to spend on this hobby. Still fine tuning the profile. I have lifted a couple
bga chips by just holding 225C until it nudged, but want to get it dialed in to just lift after the alarm sounds. Both lifts were
perfect. No pulled pads or anything.
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Re: DIY Heat Gun Top Heater with DIY Nozzle

Postby bellringr » Fri Apr 05, 2013 12:16 am

Very nice man..Great fab and weld on the nozzle:)
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Set up: t-8280 and modded PID controlled heat gun with DIY nozzle

Re: DIY Heat Gun Top Heater with DIY Nozzle

Postby code0102stinks » Tue Apr 09, 2013 1:44 pm

Here is a video of my top heater with the new nozzle doing a lift.
http://www.youtube.com/watch?v=JcCEAWqr ... e=youtu.be

Here is a pic showing the MB after lift. A friend pointed out to me there was one pad missing. Not concerned.
That is the corner I was trying to nudge the other day to pinoint exactly when it went liquidous during the profile.
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View of the chip.
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Re: DIY Heat Gun Top Heater with DIY Nozzle

Postby LarrySabo » Tue Apr 09, 2013 2:59 pm

Wow, nice job Code. I'm surprised the nozzle is positioned so high above the board. I had assumed the extension's purpose was to ensure the gap around the chip was constant and equal on all sides. Getting/keeping the nozzle perfectly perpendicular to the board is one of my challenges, as any kilter causes air to escape more on one corner/side and thereby overheats that corner/side.
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Re: DIY Heat Gun Top Heater with DIY Nozzle

Postby code0102stinks » Tue Apr 09, 2013 4:14 pm

LarrySabo wrote:Wow, nice job Code. I'm surprised the nozzle is positioned so high above the board. I had assumed the extension's purpose was to ensure the gap around the chip was constant and equal on all sides. Getting/keeping the nozzle perfectly perpendicular to the board is one of my challenges, as any kilter causes air to escape more on one corner/side and thereby overheats that corner/side.


Yes, that was the intent on the design. To put nozzle as close to the pcb as possible without touch. When I did testing and comparisons in the graphs
between using airstream, like traditional HR stations verses using TC next to the chip to control top heat. Since I am using high speed fan, controlling
the temp at the chip is so much better using TC by chip. Because I am using TC by chip, I can't get nozzle down where I designed it to be. But it is working
great though. I am getting 2.5C difference between highest and lowest of the 4 sides of the chip. very happy with that. Norcal told me his HR he used to have
wasn't that even.
Maybe after I build my new bottom heater, I can get more stable temp at bga using airstream, but it is working great now though.
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Re: DIY Heat Gun Top Heater with DIY Nozzle

Postby rik-blades » Sun Jan 18, 2015 9:15 pm

Hello all!

Sorry to bump this thread, It is my first post too! Double faux-pas...for that I apologise.

Can anyone tell me if the DIY nozzle Code built has any kind of netting or deflector in it at all, or is it straight through?

Regards

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