Electronics > Manufacturing & Assembly

Best Reuseable Flux Pen for 0603 components?

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Hootis Tigglebits:
Looking for suggestions on a refillable Flux Pen with a tip suitable for 0603 components.  I'm currently using the Hakko FS-210 as linked below.  I like the diameter and fine point brush tip that allows me to use a minimal amount of flux, but it's lacking in build quality.

https://www.hakko.com/english/products/hakko_fs210_fs211.html

thm_w:
I assume you've tried paste flux in a syringe with a fine tip and don't like it?
Or a small squeeze bottle (big clive style)?

Looks like similar thing here for $2: https://www.aliexpress.us/item/3256806458874298.html

Maybe look around for alternate hobbies like painting, cuticle pen, etc.: https://www.holotaco.com/products/nail-oil-pen

aeberbach:
I have about a 500ml bottle of flux and I refill a paintbrush pen using a disposable pipette. Works fine as long as you do not put the nylon brush on anything hot. Probably exactly like your Hakko pen without the logo and price!

Hootis Tigglebits:

--- Quote ---I assume you've tried paste flux in a syringe with a fine tip and don't like it?

--- End quote ---
I just use paste flux on wires, I think it would be too much for my application, but I'll give it a shot tomorrow.


--- Quote ---Looks like similar thing here for $2: https://www.aliexpress.us/item/3256806458874298.html

--- End quote ---
Thanks, that looks nearly identical to the hakko!


--- Quote ---I have about a 500ml bottle of flux and I refill a paintbrush pen using a disposable pipette. Works fine as long as you do not put the nylon brush on anything hot. Probably exactly like your Hakko pen without the logo and price!

--- End quote ---
The entire screw on tip looks identical to the Hakko.

tooki:

--- Quote from: aeberbach on April 16, 2024, 11:29:39 pm ---I have about a 500ml bottle of flux and I refill a paintbrush pen using a disposable pipette. Works fine as long as you do not put the nylon brush on anything hot. Probably exactly like your Hakko pen without the logo and price!

--- End quote ---
They are not. The Hakko (which is a rebadged Bonkote Bon Pen) has a valve inside, which those watercolor brushes lack.

Also, the watercolor brushes don’t always hold up to the solvents in flux. I tried (even good quality name brand) watercolor brushes and they became leaky fairly quickly. Additionally, they aren’t ESD-safe.


--- Quote from: Hootis Tigglebits on April 17, 2024, 10:49:11 pm ---
--- Quote ---Looks like similar thing here for $2: https://www.aliexpress.us/item/3256806458874298.html

--- End quote ---
Thanks, that looks nearly identical to the hakko!

--- End quote ---
The counterfeit Bonkote pens have a terrible reputation, becoming leaky much faster than the real ones, and not dosing the liquid well.


See also: https://www.bonkote.co.jp/en/bonpen
and
https://www.bonkote.co.jp/en/counterfeit-goods

P.S. I have a strong suspicion that the actual physical manufacturer of the Bon Pen is Pentel, since they look identical to the Pentel Art Brush/Color Brush/Colour Brush, but with customized tips and ESD-safe materials tested to withstand solvents.

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