I work as a science teacher and as a project over half term I’ve decided to renovate the very old and rusty retort stands in my lab. The bases are cast iron, the uprights are mild steel bar, threaded into the bases.
Step 1- dismantle
Step 2- dishwash the bases to remove candlewax, sticky gunge, blu tac/ general horrid stuff. Done whilst MrsAmbrose is out of the house.
Step 3- wire brush on angle grinder, take all bits back to shiny bare metal.
Top tip #1 Wear suitable PPE. I ended up with a bit of wire embedded in my forearm.
Step 4- Paint bases with Hammerite. Wait 48 hrs. Repaint.
Top tip #2 Do not use Hammerite in a small shed on a hot day. Nor the solvent for cleaning the brushes.
Stem 5- Ask STW how to coat/ treat the steel uprights in such a way that the users won’t get covered in oil/ cack/ gunge, will remain clean and safe and will hopefully ensure that the stands don’t get rusty.
The steel bar will have clamps attached using screw fittings. These will easily break through any paint or lacquer. Previously we have purchased chrome plated stands which have proved to be nasty things- the chrome gets damaged, the rust forms, the chrome blisters off, the users get filthy and cut on the sharp edges from the plating.
I have come up with a possible answer-
Electroplate with copper, just a very thin layer. The bars are quite long but I suppose that they could fit into a bath made from a long thin plant pot holder thingy. I can get loads of copper sulfate from work.
Any suggestions?
http://www.philipharris.co.uk/products/lab-equipment/lab-essentials/retort-stands-accessories#resultspage,1|resultsperpage,10000|
Wipe down with a wax of some kind.