Can you recommend a source for the pumps?

"Lew Hodgett" wrote in message
ink.net...
Subject

I buy epoxy resin in 500 lb drums (55 Gal) and hardner in 40 lb pails (5
gal).

I mix this 5:1 by weight, 4:1 by volume.

Designed and built a resin pumpng system consisting of a pair of 1/2"
NPT Oberdorfer bronze gear pumps that are coupled together in the proper
ratio by chain and sprockets.

The entire thing is then powered with a 1/2HP motor controlled by a foot
switch. driving a 7:1 belt reduction set of sheaves.

Use a drum heater in the winter to keep the resin viscosity under control.

Typical batch is about 1.5-2 quarts at a time.

Use a Jiffy mixer, powered by a drill motor, controlled by another foot
switch to do the mixing.

It has worked well for years now.

Lew

An Update:


Snip

Use a Jiffy mixer, powered by a drill motor, controlled by another foot
switch to do the mixing.


Sooner or later it is time to clean the Jiffy Mixer.

Since it is S/S, a 2,800F propane flame does a great job of burning off
the hardened epoxy with out harming the S/S mixer.

Don't try this on plain carbon steel mixers.

Lew