I sometimes make small plastic boxes for Arduino projects.
I use a solvent to weld the side walls to the top.
The solvents viscosity is similar to Acetone.
I have used:
a syringe to deliver the solvent to the inside corners, but find it applies too much solvent.
a squeeze bottle with a fine needle but this too applies to much solvent.
a small bladed screw driver dipped in the solvent to remove a drop at a time, this seems to be the best method out of the three.
Are there any other suggestions you might offer to apply a very small controlled amount of solvent?
I just tried the first tool above.
I made one out of two needles side by side and kept in place by crimping them in a small diameter brass tube. Cost ~ 5 cents
Here's what I would use - if money was no object (depending on how often you build such cases, and whether you sell them - this set of tools might be cheap):
As you can see, that kit will set you back about $200.00 USD - but maybe now, knowing what these items are called, you can find something that does the same job, but cheaper?
Another option - a peristaltic pump, like this one:
Remove the DC motor, and replace it with a stepper, then build a dispenser with a syringe and a button, set up a controller using an Arduino and LCD - and then you should be able to measure out precise amounts on a drop by drop basic per button press.
I use the more viscous "medium bodied" acrylic cement. I paint it on the surfaces I want to bond. It's mainly for filling in imperfections in surfaces that don't mate perfectly.
jboyton:
I use the more viscous "medium bodied" acrylic cement. I paint it on the surfaces I want to bond. It's mainly for filling in imperfections in surfaces that don't mate perfectly.
Yes, if there are voids to deal with.
Version two using 2 needle method:
NOT for glues which are thick but for "fast Bond" methylene chloride, this works GREAT!
