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Restoring a Walker Turner BN730 Band Saw #3: electrolysis

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Blog entry by Camper posted 02-12-2011 03:53 AM 2579 reads 0 times favorited 5 comments Add to Favorites Watch
« Part 2: progress Part 3 of Restoring a Walker Turner BN730 Band Saw series Part 4: painting progress »

To clean up the table, I set up an electrolysis tank. Probably overkill but I wanted to see what the hype was all about first hand. There are a few threads here about this as well. The set up is not hard, many alternative ways to do it and I think they will work equally well as long as you are not rushing through it. The critical thing is to make sure you hook up the anode and cathode correctly and not ruin your part :). I did have it hooked up incorrectly for about 5 minutes, so make sure you double check lin a while to see that it is working the way its supposed to…

Electrolysis, though very effective, did require minor sanding for a completely clean surface. The black “dust” that is formed on the band saw table did not come off easily with scotchbrite pads. So I resorted to light sanding with 400 grit wet sand paper with WD-40. Here are some pictures:

Table top before electrolysis:

The bottom before electrolysis:

The top after electrolysis and sanding. The stains on teh right hand side look worse in the pictures than they actually are. I am told that evaorust will clean that off. Have not tried yet. Luckily I did not uncover any significant pitting.

The bottom after electrolysis and sitting around for a couple of hours (note the flash rust). Most of the paint came off and probably all would if I left it in there for another day, but I am not too concerned as the paint I am using adheres to light rust and I plan to sand it off before I apply paint.

It looks better than it did before I started which makes me a happy “camper”.

One thing I am not sure that I mentioned is, after applying a paint stripper (I used a biodegradable one..highly recommended), pressure washing is real effective in cleaning off the parts and much less messy. This was also the case in removing the flaking paint after electrolysis. Pressure washing was followed up with a good drying with rags and a good rub down with mineral spirits before painting.

Thanks for looking

-- Tampa-FL



5 comments so far

View BigTiny's profile

BigTiny

1664 posts in 1641 days


#1 posted 02-12-2011 04:38 AM

Another convert to the electronic method of removing the nasty stuff!

Welcome, brother.

-- The nicer the nice, the higher the price!

View HokieMojo's profile

HokieMojo

2103 posts in 2481 days


#2 posted 02-12-2011 04:44 AM

looks great. i love electrolysis. the water (assuming no oil or other chemicals) is great for the lawn too.

View Camper's profile

Camper

232 posts in 1609 days


#3 posted 02-12-2011 04:47 AM

Thanks Big Tiny, I cannot wait to see what it will do to my next restoration project, late 40s 50s Delta 8” table saw, this thing is tiny but is HEAVY and RUSTY

-- Tampa-FL

View Camper's profile

Camper

232 posts in 1609 days


#4 posted 02-12-2011 04:54 AM

you are right Hokie, one thing I am realizing in this restoration process is that using the slower working biodegradable “green” alternatives to nasty chemical stuff you have to take to the local waste station or ways to do things where you can dump the by products in the back yard seems much easier to work with in the long run…just my humble opinion for whatever its worth….

-- Tampa-FL

View Dennisgrosen's profile

Dennisgrosen

10850 posts in 1868 days


#5 posted 02-12-2011 02:45 PM

looking good sofare :-)
you may look at my blog about using Citric acid when you have more than one part to
de-rust at the same time
and you can avoid the flash rust if you use a hairdryer or heatgun after the ragsdrying
and spray some oil on to start with (have to be degreased later)

thankĀ“s for sharing
Dennis

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