There are many stove videos on UA-cam. Very few of them represent anything new or interesting. This is head and shoulders above the crowd. Brilliant and entertaining. Many thanks for sharing!
I have leaned greatly from this, I think I want to attempt to make a pellet stove, I always thought they needed a fan that ran constantly for combustion, this video showed me differently. Thank you!
You could build a small fire inside the stove before lighting the pellets to heat the flue and get your air draw so you don't have to use so much torch fuel heating the flue that way and the fire and heat from the pellets should minimize residual ash from the heating fire
Keep in mind that I've only used it for a couple weeks, that being said, so far so good ua-cam.com/users/postUgkxAU9pOCSV9Y5JprooHvfxTpOrt4hx8uRM . Using it at 8 ft. by 8ft. deer blind that is insulated. I have to keep the door cracked for it to get enough air to burn, but that is very likely the wood I've used. Much better quality than I expected for the price. Now if I can just take it easy in the beginning it won't be 90 degrees in my blind. All in all it seems like a keeper.
It is a pity that the moment when the flame goes in down chamber is not shown. It would also be nice to insert a timelapse as the amount pellets decreases. I really liked the idea!
This fire pit is one of a few covered pits that is on the list ua-cam.com/users/postUgkxAU9pOCSV9Y5JprooHvfxTpOrt4hx8uRM of approved products for Disney Fort Wilderness. The product served its purpose well and provided excellent fires throughout the evening. We were able to open the door and do s'mores, but I had to be careful because the handle was a bit hot on occasions. Additionally, I wish they had replaced some of the standard nuts with lock nuts in some places. We lost the door handle after just a couple of days of usage. Not a deal breaker, just a recommendation. I still give it 5 stars.
I miss the floating flame of the original version, but that really is a fire breathing dragon! With the recessed dish holding the pellet hopper, that will probably preheat the combustion air quite a lot. If you had a slightly deeper dish so it sat lower inside the stove-top, it would heat the combustion air up even more, but this looks like it works very well as it is!
Супер, у мастера Золотые руки и большой полёт фантазии! Я бы с удовольствием заказал такую печь, это вещь, как раз для моего хобби- Зимней рыбалки в палатке!!👍
I made a stove with the same idea for burning pellets and the only problem I have is the ash buildup in the burner that slows the burn rate down. I am going to change mine to a vertical down draft design like yours to possibly get rid of ash buildup. Mine was previously designed to heat my home (which it does quite well) but I want to able to fill my hopper (holds 50 lbs. pellets) so it can run constantly and not be tended to. I think this is the answer. We'll see!
I can see how a "powerless rotating cowl" on top of the chimney could really help on the start up process, maybe making it become a hand cranked fan for creating draft when the chimney is cold
There are various ways to start. In a non-mechanical manner, a small fire can be placed under the stove's flue for preheating. Of course the method you suggested is cool too. Thanks for watching! :D
If you heat up the chimney pipe up before lighting the stove you will already have a draft. I usually just light a little wad of paper or a piece of cardboard to heat up the flue and that's enough to get the stove going and keep it going. The hotter it gets, the faster the updraft is in the chimney.
Buenas ese quemador de pellets se podría poner en una estufa salamandra y no los haras de serie para vender estaria interesado en comprar uno.Eres un genio y un manitas de los que quedan pocos por desgracia
Great variation on pellet feed. I was thinking of the sink drain basket for an adjustable feeding tube bottom; after removing rubber gasket and plastic handle. Your solution was faster. Great design.
Thank you for your comment! I was thinking of the sink drain basket too. However, I changed my plan not to use it after I found that excessive holes on burner bottom makes flame spread. Like I used steamer basket before. In designing this second-generation combustor, I aimed to concentrate the flames to increase combustion stability and reduce ash as much as possible over long periods of use. I'll use it for a long time and share the results. Have a nice day.
They do burn very efficient but, I'd be more concerned about burning it long term (like the one I made) and see if the burner plugs with ash and slows burn down, putting out less heat. Using it just to heat a meal then I'm sure it would easily do the trick.
I seen another video where the guy made a stove for split wood with a paint can! I tired a design for pelets and couldn't keep them burning! I find them tough to keep ignited! Does the chimney play a large role in the design? I noticed you heating the chimney, mine was inside the paint can open air vents! I also noticed your combustion chamber was sealed
I would love to see an optimization of energy gathering. I have done some simple things like large masses of iron to gather heat. my thought with pellet combusion is some sort of maximizing of energy and gathering/storing. i got my hands of railroad tracks that i cut into pieces and put ontop of my firewoos stove. keeps me warm all night.
@@GodOfReality Any dense stone will work. I'd be cautious about soapstone because of its association with asbestos. Talc and asbestos are very close relatives in the serpentine family, if I remember my mineralogy. Varieties in the Western U.S.A. are known for the asbestos association, especially. You don't want to breathe the stuff!
The iron will heat up and give off that heat relatively quickly. But a chunk of railroad track is pretty dense, all right! I'm just not sure it would give off heat for as long as dense rock. Metal is a very good heat conductor.
What if you made the hopper/burner around the exhaust tube. That way when you burned the pellets they would heat the exhaust and start the downward flow automatically?
@@campingtogether asıl ben tesekkur ederim bizlere bu güzel videoyu hazırlayıp izlettiğin için.eline emegine yüreğine saglık iyiki varsın güzel insan seni seviyorum (LOVE)❤
Question: the premise is that the draft keeps pulling not allowing the fire to creep up the feeding supply of wood pellets? Wondering how the hot metal and fire/heat doesn't move upwards into the feed supply.
How do you replace the motherboard and the blower in the pellet stove? I have a grand Teton and they are telling me that the motherboard and blower has to be replaced we never even used it
핫...^^ 당시 약간 그런 느낌으로 편집을 해봤어요. 주제도 코어로 해봤구요. 이때 뭔가 두근두근하고 신났던 기분이 기억납니다. 펠릿 연소기는 쉽게 보이지만 안정성을 고려한다면 또 쉽지 않은 부분인듯해요. 그나저나 어서 엠스토브 샘플 의뢰한게 나왔으면 좋겠어요. 샘플제작되면 영상으로 보여드리고 주문받아 제작 들어갈 예정입니다.
Awesome!!! @3:52 could you also start it by using a PC fan to push cool fresh air down on the hopper? and maybe a little alcohol or kerosene on the pellets to start the flames? I need to start making stoves again! thanks for sharing
a bike tire tube as a gasket between the opening of the bottle to the pipe. Myself I had two use the processor fan and the PSU fan. Plastic bottles and 1/2 copper pipe with a t
Avec une belle combustion comme ca il faut mettre un petit moteur Stirling et 4 LeD pour éclairer la tente. seul bémol, beaucoup de gas pour initier le tirage. En tous cas le look est super. Bravo
Never had much luck burning peletes! You have a very efficient design! Maybe they need a larger combustion chamber? Seems to work with your setup just fine
In the self-feeding top-down pellet combustor, it was found that combustion was stabilized by the vacuum only when adequate minimum exhaust was maintained. Otherwise, it is dangerous. Thank you for watching. Good luck.
There are many stove videos on UA-cam. Very few of them represent anything new or interesting. This is head and shoulders above the crowd. Brilliant and entertaining. Many thanks for sharing!
Hi. Thanks for your words! Glad you liked watching this. ♥️
Brilliant, addresses the problem of refilling a tube of pellets without smothering the fire
I have leaned greatly from this, I think I want to attempt to make a pellet stove, I always thought they needed a fan that ran constantly for combustion, this video showed me differently. Thank you!
Mr.McGoover My pleasure! Good luck🙏😊
Enough vertical chimney will create the draft you need to replace any fans.
You could build a small fire inside the stove before lighting the pellets to heat the flue and get your air draw so you don't have to use so much torch fuel heating the flue that way and the fire and heat from the pellets should minimize residual ash from the heating fire
Keep in mind that I've only used it for a couple weeks, that being said, so far so good ua-cam.com/users/postUgkxAU9pOCSV9Y5JprooHvfxTpOrt4hx8uRM . Using it at 8 ft. by 8ft. deer blind that is insulated. I have to keep the door cracked for it to get enough air to burn, but that is very likely the wood I've used. Much better quality than I expected for the price. Now if I can just take it easy in the beginning it won't be 90 degrees in my blind. All in all it seems like a keeper.
It is a pity that the moment when the flame goes in down chamber is not shown. It would also be nice to insert a timelapse as the amount pellets decreases. I really liked the idea!
This fire pit is one of a few covered pits that is on the list ua-cam.com/users/postUgkxAU9pOCSV9Y5JprooHvfxTpOrt4hx8uRM of approved products for Disney Fort Wilderness. The product served its purpose well and provided excellent fires throughout the evening. We were able to open the door and do s'mores, but I had to be careful because the handle was a bit hot on occasions. Additionally, I wish they had replaced some of the standard nuts with lock nuts in some places. We lost the door handle after just a couple of days of usage. Not a deal breaker, just a recommendation. I still give it 5 stars.
What a beautiful woodstove ❤
I miss the floating flame of the original version, but that really is a fire breathing dragon! With the recessed dish holding the pellet hopper, that will probably preheat the combustion air quite a lot. If you had a slightly deeper dish so it sat lower inside the stove-top, it would heat the combustion air up even more, but this looks like it works very well as it is!
I think it would be nice to have a deeper dish as you think. It's okay now, but I think it would be nice to make the stove a little smaller.
what tree those pellets grow on?
That's a great downdraft pellet stove! Great job!
Thanks Craig😊
Супер, у мастера Золотые руки и большой полёт фантазии! Я бы с удовольствием заказал такую печь, это вещь, как раз для моего хобби- Зимней рыбалки в палатке!!👍
все это железо можно купить в медтехнике и строительном магазине ,самому собрать .дешевле выйдет.
Did you take the time to make one, and if so, how did it turn out?
Wow that's some serious heat! Nice job👍
That hole cutter looks amazing!
I love that hole saw a lot!
I made a stove with the same idea for burning pellets and the only problem I have is the ash buildup in the burner that slows the burn rate down. I am going to change mine to a vertical down draft design like yours to possibly get rid of ash buildup. Mine was previously designed to heat my home (which it does quite well) but I want to able to fill my hopper (holds 50 lbs. pellets) so it can run constantly and not be tended to. I think this is the answer. We'll see!
Thanks for watching and for your comment!
excellent presentation and description of how to accomplish this modification.
from Montana USA
ロケットストーブの各燃焼室の役割が、これほど端的にわかる動画は初めてでした。Thanks！
Great build, very inspirational
Thanks. Glad you liked this. I was surprised that this works great compare to the one I made previous.
@@campingtogether 0p
Dude I was skeptical of the earlier version of this but you have really stepped it up since then. Your camp stove is awesome. ✌️
Thank you so much for watching again! I keep doing various experiment and tests. Have a great day!
Dude! That was Awesome!
Thanks for that sweet words!
Great video and idea
Hi, Thanks for watching! Hope it helps.
I can see how a "powerless rotating cowl" on top of the chimney could really help on the start up process, maybe making it become a hand cranked fan for creating draft when the chimney is cold
There are various ways to start. In a non-mechanical manner, a small fire can be placed under the stove's flue for preheating. Of course the method you suggested is cool too. Thanks for watching! :D
If you heat up the chimney pipe up before lighting the stove you will already have a draft. I usually just light a little wad of paper or a piece of cardboard to heat up the flue and that's enough to get the stove going and keep it going. The hotter it gets, the faster the updraft is in the chimney.
Your ideas and methods are both simple and yet ingenious made from easily accessible parts very clever.thank you for sharing
Thanks for watching! ♥️
So great stove
Brilliant, thanks for sharing!
🔥Stunningly 🔥Simple new 🔥Generation 👍🏻🤔👍🏻
Buenas ese quemador de pellets se podría poner en una estufa salamandra y no los haras de serie para vender estaria interesado en comprar uno.Eres un genio y un manitas de los que quedan pocos por desgracia
Well done!
Great variation on pellet feed. I was thinking of the sink drain basket for an adjustable feeding tube bottom; after removing rubber gasket and plastic handle. Your solution was faster. Great design.
Thank you for your comment! I was thinking of the sink drain basket too. However, I changed my plan not to use it after I found that excessive holes on burner bottom makes flame spread. Like I used steamer basket before. In designing this second-generation combustor, I aimed to concentrate the flames to increase combustion stability and reduce ash as much as possible over long periods of use. I'll use it for a long time and share the results. Have a nice day.
캠핑투게더 stay safe, maintain your health and avoid the new flu viruses.
JW Finkler Thank you! Stay safe yourself! 🙏
Old School HD Stainless
so this is all night feeding pellets into the stove so it won't stop burning?
Genius...very good
Thanks for watching! The second generation now has better combustion performance than the first generation. I'm satisfied.
You may like other videos too. I would recommend pizza oven making video in my list! Have a great day!
very cool !!!
Thanks a lot!
I’m asking myself as I’m watching this. Is it gravity fed? No need for any type of auger or am I not paying close enough attention?
I love this pellet mod!
Glad you love it.
Excellent!🎯👏🏻
This is a heating animal.,It looks super clean burning an high heat.Need to make one of these
They do burn very efficient but, I'd be more concerned about burning it long term (like the one I made) and see if the burner plugs with ash and slows burn down, putting out less heat. Using it just to heat a meal then I'm sure it would easily do the trick.
Very well done
Thanks!
So as the pellets on the bottom burn the pellets above fall?
Дорогой брат это великолепная идея готовая превратить простой отдых на природе, в отдых в отеле, круто!!!😊😉😄😃😀😍😘👏🖒👍👌💪🏅
Wow very nice 👍
Thanks for watching! Having warm winter days with this!
Dat's cool!
great video!!
Merci pour le partage. C est top!
That is one very interesting design.
Thanks! You can also use fire wood and cook on top.
Very awesome, good work.
Thanks for watching!
Very nice!
brilliant!
Excellent Idea ... and very Efficient ... Cheers
거꾸로 타는 스토브네요..!!!
Wonderful~!!! ^^
paaneet22 요기에 음식 해먹을거 아니면 난방용으론 장작보다는 펠릿이 깔끔하네요. 감사합니다.
@@campingtogether
펠릿 넣을때 갈탄 한두개씩 섞어서 넣으면 지속시간이 더 오래 될텐데요.. ^^
paaneet22 캠핑용이라 펠릿이면 충분합니다.갈탄까지는 고려하지 않고 있습니다^^
혁신에 혁신을 더 하시는군요
매번 영상 보면서 많은 것을 느끼고 배웁니다
Teddy Oh 난방용으로 사용해보려구 살짝 바꿔봤습니다. 감사합니다^^
점점 업그레이드 되어가네요~^^
저도 언젠간 한번 만들어봐야겠어요~ 돈들이지았는 재료 모아서요~ ㅎㅎ
금손 화이팅입니다~ 만들고나서 시험동작 및 라면 드시는게 왜케 부러운지요 ㅎㅎ
감사합니다. 재료 차근차근 모으셨다가 만들어 보셔도 좋을 것 같아요.^^ 그나저나 다들 라면먹는걸 이렇게 부러워하시고 좋아하시는지 ... ^^ㅎㅎ
I seen another video where the guy made a stove for split wood with a paint can! I tired a design for pelets and couldn't keep them burning! I find them tough to keep ignited! Does the chimney play a large role in the design? I noticed you heating the chimney, mine was inside the paint can open air vents! I also noticed your combustion chamber was sealed
정말 잘 만드시네요..
펠릿 연소기를 하나 구매할 예정이었는데 투케더님 제작기를 보니 저도 만들어 보고 싶은 마음이 생기네요..
감사합니다. 연소기 재미삼아 만들어보시면 충분히 기능하고 괜찮습니다 ^^ 재료가 얇아서 장시간 사용인 적합하지 않을 것 같아요.
Nice work
Very well done!
Great work👍🏼
Thanks! Glad you liked it! Hope you like other videos 👍
Very nice
Thanks a lot!
very clever!! I want one!
Thanks Tony!
nice work.
Holy how fire can fallin down
Very clever
Thanks Todd
Oh so cool, man! Big Up to You!
Классная печурка . 👍👍👍 Благодарю за субтитры .
I would love to see an optimization of energy gathering.
I have done some simple things like large masses of iron to gather heat.
my thought with pellet combusion is some sort of maximizing of energy and gathering/storing.
i got my hands of railroad tracks that i cut into pieces and put ontop of my firewoos stove. keeps me warm all night.
Some stons will do the same effect? Thanks!
Apparently soap stone is best for that. It transmits heat slowly, so it takes a long time to heat up and a long time to cool down.
Look up Thermal mass stoves.
@@GodOfReality Any dense stone will work. I'd be cautious about soapstone because of its association with asbestos. Talc and asbestos are very close relatives in the serpentine family, if I remember my mineralogy. Varieties in the Western U.S.A. are known for the asbestos association, especially. You don't want to breathe the stuff!
The iron will heat up and give off that heat relatively quickly. But a chunk of railroad track is pretty dense, all right! I'm just not sure it would give off heat for as long as dense rock. Metal is a very good heat conductor.
Thought I saw a steamer basket in there? Oh and stainless is not so easy to fabricate ya know.but is is pretty!
Steamer basket replaced with new material! Thanks for watching!
Super vraiment bien merci
Bien Merci!
pretty dang kool
투게더님~^^이거 측향식으로 장작투입구쪽에 설치하려면 어떻게 해야 할까요? 함 보여주세요~~^^
貴殿の応用能力の素晴らしさに脱帽です ありがとうー頑張ってください
ようこそ。視聴いただきありがとうございます。健康に過ごしましょう。
What if you made the hopper/burner around the exhaust tube. That way when you burned the pellets they would heat the exhaust and start the downward flow automatically?
Człowiek z pasją 👍🇨🇳
Hi Joseph I'm form Indonesia .... I like u video
It looks like the main air intake is through the pellet hopper. is the rest of it sealed except for the chimney?
Air intake should be restricted except for the pellet feed and surrounding air intakes. This will stabilize combustion.
@@campingtogether Thanks
I appreciate your creativity and ingenuity! Thanks for sharing, also I like the music and sound effects.
Thanks Craig! I am glad you like the video and music.
Starcraft words hahaha awesome
I really enjoyed Starcraft! Welcome to my terrain.
Eline emegine saglik one nummer ❤
Teşekkürler!
@@campingtogether asıl ben tesekkur ederim bizlere bu güzel videoyu hazırlayıp izlettiğin için.eline emegine yüreğine saglık iyiki varsın güzel insan seni seviyorum (LOVE)❤
Question: the premise is that the draft keeps pulling not allowing the fire to creep up the feeding supply of wood pellets? Wondering how the hot metal and fire/heat doesn't move upwards into the feed supply.
The inside of the stove is vacuumed by the exhaust pressure (negative), so air flows into the combustor and burns continuously.
How do you replace the motherboard and the blower in the pellet stove? I have a grand Teton and they are telling me that the motherboard and blower has to be replaced we never even used it
토니가 아크원자로 새버전 만드는 느낌!!!!
대단하십니다!!!!
핫...^^ 당시 약간 그런 느낌으로 편집을 해봤어요. 주제도 코어로 해봤구요. 이때 뭔가 두근두근하고 신났던 기분이 기억납니다. 펠릿 연소기는 쉽게 보이지만 안정성을 고려한다면 또 쉽지 않은 부분인듯해요. 그나저나 어서 엠스토브 샘플 의뢰한게 나왔으면 좋겠어요. 샘플제작되면 영상으로 보여드리고 주문받아 제작 들어갈 예정입니다.
캠핑투게더 기대하고 있겠습니다~
@@cherryljh 감사합니다. ^^
Awesome!!! @3:52 could you also start it by using a PC fan to push cool fresh air down on the hopper? and maybe a little alcohol or kerosene on the pellets to start the flames? I need to start making stoves again! thanks for sharing
I guess so, I would try that way soon🔥. Thanks for watching !
a bike tire tube as a gasket between the opening of the bottle to the pipe. Myself I had two use the processor fan and the PSU fan. Plastic bottles and 1/2 copper pipe with a t
Avec une belle combustion comme ca il faut mettre un petit moteur Stirling et 4 LeD pour éclairer la tente. seul bémol, beaucoup de gas pour initier le tirage. En tous cas le look est super. Bravo
연소기 잘만드셧내요 궁금합니다 연소기 불에약하지 안는가요 난로 몃번 연속으로 사용해보셧는지궁금 합니다
작년에 한 5번정도 사용했습니다. 장박용으로 사용한것은 아니구요. 재미삼아 만들어보고 마당에서 불놀이 하면서 저녁에 가지고 논 정도입니다. 밧드는 생각보다 열에 잘 버팁니다. 우그러짐 있어도 스텐이라 쉽게 구멍나고 그러지는 않습니다.
Could the burner melt aluminum if put in a metal melter furnace?
You should put a turbo on it
Very cool, and all this metal and fire makes me want to build a jet engine, lol
)) Як завжди суперово))
다른건 모르겠고 손재주는 정말 뛰어나시네요
좋게 봐주셔서 감사합니다^^
영상 잘보고 있는데요 저도 정말 거의 똑 같이 연소기 만들어 해보는데 불이 아래로 안내려가네요 불도 똑같이 붙이는데 안돼네요 장작 넣는 문에 5미리만큼 틈이 있는데 그래서 안돼는건지 궁금합니다
틈새 막으시고 초반 점화 전 후로 연통을 가열해 서 배기를 원활하게 해주시기 바랍니다. 난로 내부에 작은 불 피워서 난로와 연통을 데우시고 펠릿 불을 붙이시면 더 쉽습니다
天才です！！
うれしいです。市役所とコメントを残していただきありがとうございます。
That's very interesting an' all, but it seems a tad ferocious for cooking sausages.
Thanks for watching. This is optional, heater for hot tent.
정말 마음같아선 보고 따라ㅜ만들어보고 싶어지네요~
맘은 그러하나 손기술이 없어서 ㅠㅠ
정말 멋지세요~
기획 제작 성능검사까지 한편의 다큐네요^^
급 생각나서 짤막하게 만들어 봤습니다. 좋은 말씀 감사합니다. ^^
Never had much luck burning peletes! You have a very efficient design! Maybe they need a larger combustion chamber? Seems to work with your setup just fine
In the self-feeding top-down pellet combustor, it was found that combustion was stabilized by the vacuum only when adequate minimum exhaust was maintained. Otherwise, it is dangerous. Thank you for watching. Good luck.
Nice..
Thanks for watching! Loves your profile photo!
Hay que gastar 4 bombonas de butano en el soplete?
Very impressive ! You've basically built a blast furnace in a box . How are You going to do any cooking on it ?
Thank you John, Glad you liked this. This is a test. To cook, you can make a longer combustion chamber and put a pan on it to cook.
@@campingtogether Very good ! Job well done ! How long will it operate on one filling of pellets ?
John, 1kg of pellets lasts about 1hour and 10minutes with 2.5m high stove pipe set up! Thanks! more high more stable in burning!
Dope!
I agree!
Интересное решение по конструкции этой печки. 👍👍🔝🔝🤝🤝
love to buy one...how long does the fire last with out filling it?
성공 이네요 추카 추카
스텐찜기가 불은 예쁜데 연소가 잘 되기는 그릇이 훨씬 낫네요. ^^ 감사합니다.
수십번 보게되네요..ㅎㅎ
하도 많이 보니 ..
나도 만들 수 있지 않을까?
꿈꾼답니다.
I never saw anything like this yet before
มันใช้ได้จริงปลอดภัยตามมาตฐานสากลหรือแค่ทำออกมาเอามันคะคือวัสดุที่ใช้ปลอดจากสารพิษต่างๆมั้ยถ้านำมาประกอบอาหารกินตามภาพมันจะมีสารพิษออกมาจากการบัดกรีเชื่อมต่อมั้นไอ้อัฟเกรดให้ประสิทธิภาพการเผาไหม่ดีขึ้นน่ะใครๆก็ทำได้มันตามหลักวิศวะกรรมพื้นฐานของการสร้างเตาพลังงานที่ใช้ฟืนแต่วัสดุที่ใช้ล่ะปลอดสารพิษมั้ยเมื่อโดนความร้อนเผาไหม่จะมีสารตะกั่วละเหยออกมาให้คนใช้งานสูดดมสะสมจนเป็นมะเร็งมั้ยผ่านการรับรองคุณภาพมาตฐานจาก อย.หรือศูนย์ตรวจสอบมั้ย ดูหลายๆคริปเหมือนทำเอามันแต่น่าจะไม่ปลอดภัยถ้าเอามาใช้ในชีวิตประจำวันค่ะ
ไม่ได้มีไว้สำหรับใช้ในที่อยู่อาศัย แต่สำหรับการใช้งานกลางแจ้งสำหรับการตั้งแคมป์ ใช้ความระมัดระวังในการใช้ไฟเสมอ
@@campingtogether ขอบคุณค่ะคนทำประมาณเป็นช่างผู้เชี่ยวชาญเฉพาะทางงานช่างกลโรงงานขั้นเทพจริงๆเก่งค่ะเก่ง