Need a watery (low viscosity), clear epoxy

[provenan]

I'm looking to fill the valve shown through one of its inlet ports (ID = 1.1mm) so that the internal components will be "frozen" in place with a clear epoxy that I can examine post-teardown. I've tried standard cyanoacrylate, but it's much too viscous to wick in. I also can't force it in with pressure because I don't want to displace anything from its natural position. It feels like I almost need something close to the consistency of water dispensed from a syringe. Any suggestions/similar applications y'all have come across?

 

[LittleInch]

Water and then stick it in the freezer?

Try looking at at cable resin or this stuff?

https://metsuco.com/product/ultrath...arts epoxy resin,to cure at room temperature.

or this

https://www.cablejoints.co.uk/sub-product-details/cable-socks/3m-scotchcast-epoxy-resin-4a

Not sure how low is low so maybe call them?

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[TugboatEng]

Most epoxy hardeners are not very clear. I would suggest West System 105 resin with 207 hardener. It is viscous but it has a slow cure so it has time to flow and conform. You can also heat your enclosure to reduce the viscosity of the epoxy. I don't recommend thinners as they can make the epoxy cloudy.

You can use pressure to inject the resin as your 1.1mm orifice is what is causing the pressure. Through the orifice there will be a pressure drop. Provided your enclosure is vented there will be no pressure internally.

 

[FACS]

Deep Pour epoxy resin.
Made for wood working, can use for heavy pours and flows as you want.

 

[GregLocock]

PVA Woodworking glue, can be diluted. Or some varnish of some sort?

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[Tmoose]

How clean are the innards when you freeze them?

Wicking Loctite 290 is pretty creepy and medium strength . gaps over .006" with an activator.

It does a REAL good job locking stuff like throttle adjustment screws etc.

 

[Qcprick63]

Sika Pro select Crack Fix ! Its a very low vis concrete crack filler. Hardens moderately quickly and has an amber hue when cured. Might be available at your nearest home center.

 

[Compositepro]

Mix a little glycerine into two part epoxy. It acts as a plasticizer which makes the adhesive more flexible, and as an internal release agent to prevent sticking.