Todays Project - What did you do today?

[aRM]

        Hi Guys
A small deviation here please.
This De-rusting via the ELECTROLYSIS method has me flummoxed
Already went thru' two Battery Chargers, till the  supplier got fed up and refunded my money
Check out the pics and the Charger  -  maybe at 6 Amps it's a bit too small  ???  Do we get one with a bigger Amperage  ???
The black plastic container is approx  500 x 350 x 300 mm, so we don't know size wise if it's OK ???
Let us have Your thoughts
TIA
aRM

[f350ca]

aRM, the problem may be the type of charger, haven't tried electrolysis yet but from what I've read the automatic ones as you have there won't work. They need to sense the battery to turn on and shut down when the battery reaches a certain voltage. You need the old school transformer, diode type.

[aRM]

(05-25-2015, 12:42 PM)f350ca Wrote: aRM, the problem may be the type of charger, haven't tried electrolysis yet but from what I've read the automatic ones as you have there won't work. They need to sense the battery to turn on and shut down when the battery reaches  a certain voltage. You need the old school transformer, diode type.

Hello GREG
When they say Auto ones we think they mean those SMART AUTO ones which we had to turn down anyway. These did start up OK initially but when dead the next day.
Will try and source those "Transformer Diode types"
Thanks
aRM

[PixMan]

I've been very busy lately since my mom was moved to a skilled nursing facility for the remainder of her years. Her home (where my shop in located) is being cleaned out as my younger son Brian and his long-time girlfriend are going to buy it and move from the "in-law" apartment (cave) in the cellar next to my shop.

Outside my shop is a little patio, in front of the "woodworking" shed. My dad had set up a plastic table with a heavy metal base for an umbrella. Brian had bought a new 9ft round umbrella and yesterday I made the mistake of leaving it open while I went home for lunch. When I got back, I found the umbrella had been blown out of the table and damaged the center hole. I felt obliged to fix it, so that was my project today.

I won't bore you with photos of the process (because I didn't make time to take pictures), so I'll describe the process. Because the molded table blew out the boss around the hole, I needed to make plates for top and bottom with a clearance hole for the Ø1-1/2" pole. I also wanted a depth to the bore to beef it up.

Russ had gifted me a few plates of 1/4" thick 6061 aluminum, and some Ø3-1/2" round drops. The plates measured about 8-5/16" x 9-1/2", so I centered them in my Alliant/Prototrak machine and milled a Ø1.560" bore on two of the plates. Then I drilled a Ø2-1/2" x 4 hole pattern, and a Ø6" x 6 hole pattern in one, all drilled to Ø.265" (17/64"). One the second one I milled the same bore, and drilled the same Ø2-1/2" x 4 blot pattern. For the Ø6" x 6 hole pattern, I drilled blind holes to Ø.201 for a 1/4-20UNC tap. This only gives me about 3/16" depth of thread with a bottoming tap, but six of them should be strong enough.

For the length of the Ø1.56" bore, I took one of the Ø3-1/2" drops and cleaned up the faces to a 2" length. On one end I gave it a healthy 45º chamfer. On the opposite end I drilled and tapped a 1/4"-20UNC 4 hole Ø2-1/2" pattern to about 1" of thread. Now using the bottom plate with all clearance holes, I placed it over the damaged area and used it as a drilling template. Now to assemble, I passed six 3/4" long bolts up through the bottom plate, though the table surface and into the mating blind tapped holes of the top plate. Using four 1-1/4" long bolts, I passed those through the bottom plate, table and top plate, threading into the bottom of the "stanchion." (Is that what I should call it?)

Photos of the finished project is all I got for you this time. Sorry.

[Roadracer_Al]

@ aRM - you need an "old school" battery charger like what they had in gas stations. The kind with wheels, because of the big-ass heavy transformer, and has a 12v 225amp "starting" setting that will jumpstart nearly anything or set fire to the starter motor while trying... And no solid state electronics. You're more likely to find one in a used tool store, or the tools section of whatever is like Craig's List where you live.

[aRM]

(05-25-2015, 09:37 PM)Roadracer_Al Wrote: @ aRM - you need an "old school" battery charger like what they had in gas stations.  The kind with wheels, because of the big-ass heavy transformer, and has a 12v 225amp "starting" setting that will jumpstart nearly anything or set fire to the starter motor while trying...  And no solid state electronics.  You're more likely to find one in a used tool store, or the tools section of whatever is like Craig's List where you live.

AL
Thanks for this
Will really have to talk to some old-school Motor mechanics down here to source one of those golden oldies. 'Tis looking for hens teeth like they say and many atimes has Providence played a helping hand in our search for that elusive item which seemed totally unavailable.
Will make a concerted effort and see what gives.
Glad U pointed out this out
take care
aRM

[Mayhem]

Nice work Ken (goes without saying). I bet Brian is hoping that you break more things around the house

So, will a certain Okuma CNC lathe find a home in the recently departed "cave"?

I'm really sorry to hear about your Mom but given our conversations over the years, I know that the choice is best for her, regardless of how difficult it was to make.

[stevec]

(05-25-2015, 09:37 PM)Roadracer_Al Wrote: @ aRM - you need an "old school" battery charger like what they had in gas stations. 

aRM, I disagree with the above but I do agree that the "electronic" battery chargers won't work.
A good step down transformer (120 to 12 or 24 +/- volts) through a full wave bridge rectifier will give you the
output you require. An adequately rated capacitor across the DC output will reduce some of the "ripple"
but I doubt if it's really necessary for electrolysis de-rusting.

Steve

[PixMan]

(05-26-2015, 06:56 AM)Mayhem Wrote: Nice work Ken (goes without saying).  I bet Brian is hoping that you break more things around the house

So, will a certain Okuma CNC lathe find a home in the recently departed "cave"?

I'm really sorry to hear about your Mom but given our conversations over the years, I know that the choice is best for her, regardless of how difficult it was to make.

Darren,

The shop outside the cellar apartment won't change a bit, so no room for a CNC lathe. I would like to get a Sharp 2412 or 2414 3 axis CNC VMC with toolchanger in there as an upgrade from the 2 axis Prototrak, it would fit. I'm working on rearranging finances here at home to be able to fund such a machine.

My older son Steven will be moving into that apartment/flat (whatever you want to call it) and hopefully find a steady job. My mother isn't having much success in adapting to her new environs. Most days she's non-communicative, yesterday she kept saying "I want to go home." That isn't happening so all we can hope is that her dementia prevents her from remembering home too much as she "heads for the door."

[aRM]

(05-26-2015, 07:17 AM)stevec Wrote:

(05-25-2015, 09:37 PM)Roadracer_Al Wrote: @ aRM - you need an "old school" battery charger like what they had in gas stations. 

aRM, I disagree with the above but I do agree that the "electronic" battery chargers won't work.
A good step down transformer (120 to 12 or 24 +/- volts) through a full wave bridge rectifier will give you the
output you require. An adequately rated capacitor across the DC output will reduce some of the "ripple"
but I doubt if it's really necessary for electrolysis de-rusting.

Steve

Hello Steve
This "Step Down Transformer" seems more gettable down here. Will make some serious enquiries on the morrow.
Do forgive our ignorance though, but what Voltage would we need use it at ???
Also, years ago when my son got his first 220 Volt stick welder, I recall reading the leaflet that came with, that it could be used to charge batteries as well. These small stick Welders do have Positive/Negative croc Clamps but I am not too jacked-up on the Voltage capacities.
Could that Welder be used instead ???
TIA
aRM