14 replies to this topic

[dalek]

My Lucky Bob's acid flux applicator brush is beginning to lose its bristles.

 

Any suggestions on how to fix?

 

[MSwiss]

Years ago, when I was still GM at Koford, one of us figured out this was the brush that handles strong acid flux the best.

 

A couple of drops of flux in an old tire cap or bottled water cap works great.

 

You should toss the cap periodically as the exposed flux seems to lose some of it's pizazz after a while.

 

PS - before I use it, I usually trim off a 1/3 or 1/2 of the bristles with a sharp pair of scissors. 

 

[JHMerriman]

You can order the replacements from Lucky Bobs. LB1300 is the part number, I think theyre .25/per replacement brush.

[Mr. M]

I always use a small artists brush, they last about a year.

[dalek]

Thanks guys.

 

I use a hobby swab to apply rosin flux but I don't want a separate brush for acid flux (see my flux setup below) and since, as James pointed out, the replacement Lucky Bob's brushes are so reasonably priced, I'm going to ask my local raceway to order them.

 

 

[dalek]

The holes were made with a 1 1/8 paddle bit.

 

The little jar (from the art supplies dept. of a craft store) is a press fit in the 1 1/8 hole.

 

In order to make the acid flux bottle a press fit, I increased the bottle's diameter by adding a layer of masking tape around it.

 

[team burrito]

just use a bottle cap & a disposable paint brush - sheesh!

[dalek]

just use a bottle cap & a disposable paint brush - sheesh!

 

Thanks, but no.

 

I usually use acid flux only once or twice a week.  

 

I use it to tin a motor in prep for installing it in a chassis or tin a couple of chassis uprights in prep for installing bushings.

 

Note:  After I've tinned the steel, I use rosin flux to install the motor or bushings.

 

Also, I consider the size and shape of the Lucky Bob's applicator brush to be ideal for allowing me to put the very small amount of liquid flux I need, exactly where I need it.

[zipper]

I just use a small screwdriver to apply, it gets slowly eaten by the flux....

[Tim Neja]

I use the little tube left over after the bristles are GONE!!  Works just fine and never wears out! 

[Bill from NH]

I stuck a 1" length of clear spring insulation in the squirt nozzle of a bottle Stay Clean flux years ago for placing pinpoint drops of flux. I use a red cap from an old pinpoint oiler to keep it capped when not used. This arrangement allows me to use a flux brush less often.

[Half Fast]

I use medical applicators, cheap and disposable.

 

Cheers

[Eddie Fleming]

I just use a small screwdriver to apply, it gets slowly eaten by the flux....

try one of those plastic screwdrivers for adjusting pots on PC boards and electronics. 

[team burrito]

I usually use acid flux only once or twice a week. 

 so do i - i use it whenever i need it.

[Wizard Of Iz]

I use a small version of these jewelers applicators. I have one that’s dedicated to acid flux and one that’s dedicated to paste flux.



https://www.esslinge...ck-pack-of-100/