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[#1] Humminguru 超聲波洗碟機    
Just got this bargain RCM, developed by Hong Kong Company, it is now available officially , not a kickstarter project!


blackspin
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2021-12-06 10:54
[#2] Humminguru 超聲波洗碟機    
Haha report... Please..
Haha

Very nice .
hahayanyan
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180.xxx.xxx.220
2021-12-06 11:44
[#3] Humminguru 超聲波洗碟機    
可否較Ultrasound 強度?麻煩幫手聽下洗完超高有冇減弱到吖,唔該晒^ ^
ernest
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61.xxx.xxx.92
2021-12-06 12:09
[#4] Humminguru 超聲波洗碟機    
喱部我都好有興趣,感覺上就算當第一段用手嚟洗然後再用超音波洗完剩係風乾都抵用,我覺得喱個 design concept 幾好,部機細細部,入風部份已經有 filter,只係唔知超聲波部份夠唔夠力,同埋唔知洗碟嗰時會唔會好嘈? 佢用 40 kHz 超聲波算係最普通嗰種,另外唔知佢用幾個震子,有機會可以試吓洗完一面反另一面再洗睇吓會唔會明顯乾淨啲,聞說 KLAUDIO 機內嘅震子舖排都有喱個限制。 40 kHz 算係最普遍超音波應用頻率,KLAUDIO 用 40 kHz,KirmussAudio 聲稱用 35 kHz 嚟洗係最好唔會洗傷隻碟,Degritter 聲稱用 120 kHz 話啲泡泡細啲先至洗到入坑唔傷碟。 我曾經同時間有幾部超聲波洗碟機當中包括 KLAUDIO,但一直以來未曾察覺到隻碟洗完會有超高有減弱嘅問題。 KLAUDIO 洗碟時好嘈,有時嘈到頂唔順,另外只能用純水唔可以落藥水,宜家主要用 Degritter,貪佢洗碟時唔嘈同埋可以落藥水,有機會都想試吓部 Humminguru。

最後修改時間: 2021-12-06 12:44:49
長長影子
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165.xxx.xxx.156
2021-12-06 12:30
[#5] Humminguru 超聲波洗碟機    
Haah.. I am. Quite another way wishes..

I do consider.. Using it or other utlrasonic as the first washes...

And vacuum machine for the second..

But too many hobby.. No time for exploring another washing option

Do keen to know any good off the shelf surfacant

Haha

最後修改時間: 2021-12-06 12:44:06
hahayanyan
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2021-12-06 12:41
[#6] Humminguru 超聲波洗碟機    
喱啲係我以前試過用,而且喺香港容易搵得到嘅牌子。

長長影子
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2021-12-06 13:22
[#7] Humminguru 超聲波洗碟機    
用ultrasonic cleaner 清潔物品,物品上某啲位置嘅溫度可以上升到難以置信嘅水平,可以上網search cavitation bubbles temperature, 有啲位上到攝氏2000-5000度

就算唔係成隻唱片破壞,都有局部位置被炸傷
Thanatos
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42.xxx.xxx.207
2021-12-06 13:51
[#8] Humminguru 超聲波洗碟機    
時有聽聞話超聲波洗碟機會傷碟,超聲波應用有分好多唔同類別,清潔眼鏡片與別清洗 IC 等用法都已經好唔同,我諗點樣去應用超聲波又唔傷碟都應該仲有唔少 know-how,我估唔係每一部應用都有機會上到攝氏2000-5000度,我用嗰部 degritter 個設計都有溫度感應、de-gas.... 等等,我睇 KirmussAudio 嘅 info. 又好似幾 make sense,可以參考吓:

"Not All Ultrasonics Wash Your Records Safely: Specify 35 kHz.

"Sonically speaking", Indeed where higher the frequency, the smaller the bubbles, smaller the bubbles, they enter small crevices easier.

A Record Contrary To Popular Belief Is Not A Small Crevice. Minute details within the groove provide timbre, this is why analogue provides the excellence it does.​ These indentations should never be removed.

In 3 years of extensive testing, we found 35 kHz is the sweet spot, it does not remove these details and does not "smoothen" the grooves as would a poorly designed record cleaner, leaving a residue which has the same effect. Not 45, not 80, not 90 kHz. NEVER 120 kHz or higher. All are proven to damage records over time. Much misinformation is out there: We have in house, experienced engineers familiar with ultrasonic generation. ​35 kHz is gentle yet powerful enough to do the job properly.

A Primer on Sonic Technology: Under pressure of continuous vibration by the ultrasonic generator at the bottom of the tank. bubbles generated rise and stretch and compress at a fast rate. Once they reach a certain size as determined by the frequency and strength of the sound waves which produced the bubbles they lose structural integrity and collapse violently. When these implosions happen near the surface of an object such as a record, the bubbles emit high-powered streams of plasma which travel at more than 500 miles per hour and collide with, agitate and remove even very tiny particles and substances from the record's surface.

Using a surfactant further attracts these bubbles to the record. For new records, 40 mL of 70% alcohol per 6 L of distilled water to remove record pressing residue, on records which have been cleaned using detergents or soaps, our 1% propanol surfactant brushed gently into records aids this.

CAVITATION: In an ultrasonic cleaning machine, implosions occur millions of times per second, removing contaminants. Bubble size relates to how much energy is released when they implode. That’s why a higher frequency produces less intense cleaning, (smaller bubbles) but because a higher frequency yields more bubbles it's a better choice for cleaning parts with very tiny features such as blind holes, channels and threads. This a danger for vinyl and shellacked records. ​Small Bubbles Damage The Depth Of The Groove Removing Timber And High Frequencies. The Best Ultrasonic Frequency After 3 Years Of Testing Is 35 kHz With A Max Temp Of 35°C.

Higher frequencies such as 100, 125, 130 kHz are used for fine cleaning jobs as they enter small surfaces including microelectronics, printed circuit boards, medical and precision optics. Powerful implosions remove post manufacturing matter and dirt. The 35 kHz frequency has a good combination of power, penetration, and especially, a very even energy distribution and can successfully address most cleaning applications when combined with a properly-engineered cleaning system and also does not damage the stainless steel basin as do higher frequencies. "

https://www.kirmussaudio.net/index.php?route=information/information&information_id=10

https://nebula.wsimg.com/fb0525b3d4b9cc6f9ae9e7ba1d8656a2?AccessKeyId=4B538B7DE3858D8D16A4&disposition=0&alloworigin=1

https://www.kirmussaudio.net/index.php?route=product/category&path=96


另外有關 surfacant:



最後修改時間: 2021-12-06 14:31:13
長長影子
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165.xxx.xxx.156
2021-12-06 14:17
[#9] Humminguru 超聲波洗碟機    
Haha 嘗試用第二個角度去睇

Hifi發燒友... 嘅錢真係比較容易賺

所以好多這類型嘅產品.. Fact.. Is really not much real r&d behind...

However 做對了一些小事情往往都 咁就買得出( 依然好多嘢都係一知半解... 事實又真係好難去 成本很高去增加了解..)


Many area... We need to look at...

Such as.. Tempurture when actual needle contact moment... Etc..

Many point of view.. I see no harm for using surfactant at all... Only male things easier.. Or better..

Sizes of bubble.. No. Of bubbles..

Seem easy things.. Actually is quite diffcult experiment to find out what excatly happens to the groove.. Optical visual deformation check on a cut test section may be fesbilbe, and not to hard to conduct such test..
Or puposely prepare a test control pieces...


但係唔使搞咁多嘢兩三萬蚊嘅洗碟機都有人買.. As a maker.. Really have not much intuitive to invest further..

有心係一回事, 需要or not 又係另一回事嚟嘅

理論歸理論

But always nicer to have a valid test...

Haha






最後修改時間: 2021-12-06 14:35:54
hahayanyan
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180.xxx.xxx.220
2021-12-06 14:32
[#10] Humminguru 超聲波洗碟機    
原理大致相同

攝氏2000-5000度應該係極微細、極短暫,但係就有破壞力

由於cavitation collapse 牽涉嘅溫度遠遠超出PVC溶點,很難用調節能量或頻率去完全預防破壞。因為極微細的爆炸點就是超聲波清洗的工作原理。

有文獻講過,長期用超聲波清洗某一件物品,會有極微細的micro-etching

都係嗰啲constructive interference 一個位特別強勁嘅情況

亦都有article講過就算用sweep mode (超聲波source嘅發源點移來移去)都未必能夠減低破壞力

黑膠唱片本身唔平滑,峰與谷凹凹凸凸,峰頂某一些點可能會承受極大能量,難以預計那一個位置會承受得大能量。
Thanatos
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42.xxx.xxx.207
2021-12-06 14:37
[#11] Humminguru 超聲波洗碟機    
我冇咁多錢可以畀牌子賺,宜家我自己就只係用紅威寶(car wash formula) 手洗,然後落 photo-flo 機洗。 唔係建議大家跟我,因為有咩問題時唔輪到我負責,用牌子水嘅話有咩問題可以追返嗰個牌子。

長長影子
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165.xxx.xxx.156
2021-12-06 14:39
[#13] Humminguru 超聲波洗碟機    
我相信洗碟用乜方法洗點都有一定程度上嘅損耗,就算落針播碟都一樣係會有損耗,所以啲舊版碟、白版碟我會選擇洗完碟之後會錄成 file 收藏。

最後修改時間: 2021-12-06 14:58:12
長長影子
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2021-12-06 14:42
[#12] Humminguru 超聲波洗碟機    
其實就算係Keith Monks 嘅尼龍繩都會有abrasion(刮傷)

都係老土啲講句:唔使清潔就唔好清潔,好多物品嘅破壞都係源自overzealous owners

除非真係太污糟

如果唔係太污糟,同一個表面唱幾次,就會乾淨咗(唱針會刮走少少污跡)
Thanatos
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42.xxx.xxx.207
2021-12-06 14:42
[#14] Humminguru 超聲波洗碟機    
其實都係一個 valid assumptions.. If KM machine type is relatively safer for that nylon thread.. vs cartridge
. Contact downward force and material hardness.. Etc..

May be the best way is special needle contact cleaning method and then clean that special needle..

Haha



最後修改時間: 2021-12-06 15:08:21
hahayanyan
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180.xxx.xxx.220
2021-12-06 15:07
[#15] Humminguru 超聲波洗碟機    
有關於類似Keith Monks 尼龍繩吸頭,好多師兄都誤解咗,以為係逐行洗

其實唔係,佢嗰支臂一嘢扯出去,其實跳過咗好多行
Thanatos
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42.xxx.xxx.207
2021-12-06 15:12
[#16] Humminguru 超聲波洗碟機    
super smart choice

"Kodak Photo-Flo 200 Solution is a wetting agent used to minimize water marks or streaks during film development. It is used after the final wash when processing films to decrease the water-surface tension and promote faster, more uniform drying"
hahayanyan
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180.xxx.xxx.220
2021-12-06 15:13
[#17] Humminguru 超聲波洗碟機    
喱兩個 cost-effective 方案其實都係 R33 嘅網友不吝指教。
長長影子
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2021-12-06 15:46
[#18] Humminguru 超聲波洗碟機    
#3

Official site have all the details and there are hundreds of user report in the foreign audio forum......

https://humminguru.com/

https://forums.stevehoffman.tv/threads/interesting-all-in-one-ultrasonic-cleaner-humminguru.1032146/

https://www.needlesandgrooves.com/threads/new-ultrasonic-vinyl-cleaner-in-the-works-humminguru.1478/
blackspin
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2021-12-06 16:32
[#19] Humminguru 超聲波洗碟機    
#7

I used to have such concern, but after read all those thread I quoted, there are many professional opinion that relief my concern about ultrasonic vinyl cleaning............. strongly suggest you read them
blackspin
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218.xxx.xxx.149
2021-12-06 16:38
[#20] Humminguru 超聲波洗碟機    
I am too lazy to shoot the video or posting review........ for those who wan to see how it operate, please take a look the below YouTube video from one of the backer:

https://www.youtube.com/user/1993pug405mi16/featured
blackspin
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2021-12-08 07:55
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