EEVblog Electronics Community Forum
Electronics => Beginners => Topic started by: okp on December 08, 2017, 06:55:04 pm
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Hey everyone,
Thanks for accepting my membership to this forum. I was looking for a reflow oven and found a lot on eBay but they seem to lack quality. After some research, I found Whizoo and the reflow oven build kit Controleo3. I'm actually doing some small easy PCB like this one at the hot air station but making 10 of them is a journey ! So I ordered the Controleo 3. Hopefully I'll get it quick ! It may also open new opportunities for me to solder some double sided PCB.
(https://scontent-lga3-1.cdninstagram.com/t51.2885-15/e35/14712138_368292916835764_3634287535011659776_n.jpg?ig_cache_key=MTM2MTc1MTI5NDYzMjY2NzIzMQ%3D%3D.2)
Now I'm looking for a small oven, I've also read here and there and I found these. Seems I need to aim for 1500W.
- https://www.amazon.fr/Spice- (https://www.amazon.fr/Spice-)électrique-6-Choisissez-différents-ventilation/dp/B01LCOF9PI/ref=pd_sbs_79_6?_encoding=UTF8&refRID=YY4XYT6GX3HXT81D285G&th=1
- https://www.amazon.fr/H-Koenig-FO35-Mini-Four-Electrique/dp/B00AZFJGZ0/ref=pd_sbs_79_7?_encoding=UTF8&refRID=YY4XYT6GX3HXT81D285G&th=1 (https://www.amazon.fr/H-Koenig-FO35-Mini-Four-Electrique/dp/B00AZFJGZ0/ref=pd_sbs_79_7?_encoding=UTF8&refRID=YY4XYT6GX3HXT81D285G&th=1)
- https://www.amazon.fr/Andrew-James-Mini-Convection-Litres/dp/B00A9UQBEU/ref=pd_sbs_79_8?_encoding=UTF8&psc=1&refRID=YY4XYT6GX3HXT81D285G (https://www.amazon.fr/Andrew-James-Mini-Convection-Litres/dp/B00A9UQBEU/ref=pd_sbs_79_8?_encoding=UTF8&psc=1&refRID=YY4XYT6GX3HXT81D285G)
- https://www.amazon.fr/gp/product/B003HD7YJC/ref=ox_sc_sfl_title_3?ie=UTF8&p;smid=A1X6FK5RDHNB96;sc=1& (https://www.amazon.fr/gp/product/B003HD7YJC/ref=ox_sc_sfl_title_3?ie=UTF8&p;smid=A1X6FK5RDHNB96;sc=1&)
Which one would you advise. I'm not going for big PCBs, so something small would be great!
Cheers and thanks a lot!
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Good choice! I love the oven I built with a Controleo2 kit. I used the cheap Black&Decker model mentioned in the Whizoo build guide. My only complaint is that cheap toaster ovens are made of really flimsy sheet metal which doesn't maintain its shape after being taken down to parts and then put back together again. The frame of mine wasn't entirely square after reassembly, and it took a few heat cycles for everything to pop back into place. So, maybe shop for something a bit nicer than those in the $30/€25 price range.
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Nice post. I bought an industrial temperature controller, thermocouple and probe from Amazon. Still looking for a good cheap toaster oven here in the U.K. So I would be interested in seeing some recommendations for ovens in the U.K. I may have some Christmas money to spend
Chris
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thanks both of you for your feedback. Seems any oven 1500W can do it right?
I'm also searching or paste solder... would you be so kind to advise me a good quality one?
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I've only used Chip Quick brand solder paste, so far. It's worked just fine for me. All of my failures have been related to operator error.
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thanks a lot for the feedback; much appreciated ! any special reference I should consider?
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Most pastes sold in decent stores are ok, you should look for a company in your country supporting local manufacturers you will get a good price and fresh paste.
Never buy overseas.
As an example I buy with printec here in holland that sell Felder for half the price as Farnell asks for example for multicore that is also very good.
http://www.printtec.nl/contents/en-uk/d239_Solder_paste_LEAD_FREE.html (http://www.printtec.nl/contents/en-uk/d239_Solder_paste_LEAD_FREE.html)
So look in France where to find such a company, or ask on your local electronics fora.
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thanks man. great info.
I've received the Controleo ! really happy how fast it has arrived to EU. For the oven... is this one that bad ?
https://www.amazon.fr/gp/product/B00AZFJGZ0/ref=pe_2444121_229820971_em_1p_0_ti (https://www.amazon.fr/gp/product/B00AZFJGZ0/ref=pe_2444121_229820971_em_1p_0_ti)
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I found this one that looks perfect 12L / 1400W
https://www.boulanger.com/ref/1049373 (https://www.boulanger.com/ref/1049373)
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Yihaa, anyone around to support? I don't want to get the wrong oven. I wish I could get a 10L 1500W. I'm not going to produce lots of PCB and not going for the motherboard PCB; just 10 of them, 4x4cm maximum. The last oven is pretty good but is convection.
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I continued my search
https://www.boulanger.com/ref/8003583 (https://www.boulanger.com/ref/8003583)
20L / 1500W (grill) - 1300 Natural convection.
=> 50 euros
or this one
https://www.boulanger.com/ref/1077728 (https://www.boulanger.com/ref/1077728)
24L / 1500W Natural convection
I found the STEBA KB14 (which is smaller) but it's only 1200W... and really don't know what I need to do to make it 1500W for example.
http://www.ebay.fr/itm/STEBA-KB-14-Backofen-mit-Umluft-Ober-Unterhitze-Programmwahler-1200-Watt/272638646453?hash=item3f7a8798b5:g:aJoAAOSwuspY-MJq (http://www.ebay.fr/itm/STEBA-KB-14-Backofen-mit-Umluft-Ober-Unterhitze-Programmwahler-1200-Watt/272638646453?hash=item3f7a8798b5:g:aJoAAOSwuspY-MJq)
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Still look and I think the STEBA KB11 would be great.
http://www.ebay.de/itm/STEBA-KB-11-Mini-Backofen-silber-schwarz-Kompaktbackofen-1000-Watt-Innenraum-9L/282577774905?epid=1025216744&hash=item41caf2a939:g:3HoAAOSwt9NZbzlO (http://www.ebay.de/itm/STEBA-KB-11-Mini-Backofen-silber-schwarz-Kompaktbackofen-1000-Watt-Innenraum-9L/282577774905?epid=1025216744&hash=item41caf2a939:g:3HoAAOSwt9NZbzlO)
How can I make this oven go to 1500W? where can I buy the additional stuff to make this happen?
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I emailed the Controleo developer when I purchased my controller, asking his opinion about the oven I found. He recommended selecting one with the smallest practical size. A larger interior volume makes it harder to maintain a uniform temperature throughout. I found my oven thrown away on the side of the road (Black & Decker CTO6120 12" pizza oven) and he thought it too big. I'm still in the construction phase but think I will reduce the interior volume somehow.
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Thanks, so the Steba KB11 seems to be fine right?
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I don't know. The Steba 1000W doesn't look like it has more than 2 elements (1 top; 1 bottom). The 14L boulanger you linked to earlier shows 2 lower elements in one of the pictures. With 1400W, I suspect it then has 2 upper elements as well. At 14L that oven seems just right. My B&D oven is 19L and as I said it's a bit too big. Smaller is better. To boost the oven's ability to pump in heat, the Controleo build advises to add an additional element to the bottom. That's what I'm doing with mine.
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I ordered two Steba KB11 and will take the component to make one.
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I’m ready to build ! I received the two ovens today. I have totally disassemble one of them to get all the parts.
(http://image.noelshack.com/fichiers/2017/51/5/1513975719-img-0369.jpg)
(http://image.noelshack.com/fichiers/2017/51/5/1513975719-img-0367.jpg)
(http://image.noelshack.com/fichiers/2017/51/5/1513975719-img-0366.jpg)
Now I’m going to build my Oven to host the Controleo3. This is the first time I do this.
As you can see the oven has two heating elements in series, one 500W top 115V, one 500W bottom 115V but 1000w is not enough.
I think I need to separate these two heating elements, drill new holes and put them in new holes 3cm on the left; then put the two others on the right 3cm from the existing ones and then wire the two ones on the top and the two one on the bottom.
Am I right?!
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This is my plan for the heating elements. I was pissed to be locked by the door opening system as I wanted to put one element more on the bottom left... but in fact.. I will let it like it is... because I'll be putting a booster system provided with the Controleo3.
(http://image.noelshack.com/fichiers/2017/51/5/1513982335-img-0372.jpg)
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In my Torch reflow oven all six heating elements are placed on the top, none on the bottom.
Since the components are on top it does not make much sense to have any elements on the bottom. Perhaps you can move them? If you are going to use them on the bottom anyway you might want to shield the pcb with alufoil and use a lot of fans for proper air and heat circulation.
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Help me understand, these food ovens, top one at 100$ + your circuit controller and insulation mods, are better than a true authentic bottom end cheap Chinese 200$ real true SMT oven with programmable temperature curve?
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okp - how did you get on with the Steba KB 11 and the Controleo3? Interested in doing the same conversion myself so any info greatly appreciated.