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My recollection is that I should be using a special acrylic cement.
It's for repairing a clear acrylic Harman Kardon soundstick that came apart, so I'd want something that won't cloud the acrylic -- but also the acrylic parts are small and fairly delicate, so I'd want something that's not too aggressive in terms of melting the joins.
TiA
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Yes, acrylic cement.
A tiny narrow line of Weld-On #4 applied with a needle-applicator if you want to minimize clouding and scars.
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What Tianjou said. For a clean job, the fit must be very, very good with no discernible gaps. Also, be careful with that stuff--its viscosity is really thin and it runs everywhere if you put on too much. If you put on too little, you can end up with bubbles that don't have enough cement, sealed so that more cement can't wick in.
Make sure the pieces are positioned dead-on and secure in place, because adjusting the position after the cement wicks into the joint is asking for trouble.
Don't ask me how I know these things.:banghead:
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Good luck! I love HK Soundsticks. The look cool, sound good.
New ones have Bluetooth as well. All they need is some multicolor LEDs that move with the music!
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I have some sound stick threes that I bought from Amazon. They had a lightning deal for $100. I see now they’re selling (completed listing) for $400 on eBay (and that was a display unit)!
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Hmmm... my recollection is that I had a can of TAP acrylic cement, but it's all evaporated.
What is the difference between the different types of Weld-On ? I see #3, #4, #16, etc. ... none of them are particularly cheap and I will need very little of it. Wondering what would happen if I were to use a superglue...
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Weld-n dissolves a small layer of the acrylic inside the joint, creating a weld, where the material from both pieces are melted together. The joint is as strong as the material surrounding the joint. Superglue might work, but is only an adhesive, making the two pieces stick together.
TAP still sells their cement.
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PeterB wrote:
What is the difference between the different types of Weld-On ? ...
Read the label. Each has different properties.
#3 and #4 are nearly identical, but #3 sets so quickly that you probably won't be able to make the join properly and will end up either mis-aligning it or jiggling it while it sets so will leave a scar where the pieces drag against each other.
#16 in a tube is very thick. I use it to to seal seams and fill gaps. It can substitute for epoxy in some situations, for example, when I cement neodymium magnets in plastic.
