• Scam Alert. Members are reminded to NOT send money to buy anything. Don't buy things remote and have it shipped - go get it yourself, pay in person, and take your equipment with you. Scammers have burned people on this forum. Urgency, secrecy, excuses, selling for friend, newish members, FUD, are RED FLAGS. A video conference call is not adequate assurance. Face to face interactions are required. Please report suspicions to the forum admins. Stay Safe - anyone can get scammed.
  • Several Regions have held meetups already, but others are being planned or are evaluating the interest. The Ontario GTA West area meetup is planned for Saturday April 26th at Greasemonkeys shop in Aylmer Ontario. If you are interested and haven’t signed up yet, click here! Arbutus has also explored interest in a Fraser Valley meetup but it seems members either missed his thread or had other plans. Let him know if you are interested in a meetup later in the year by posting here! Slowpoke is trying to pull together an Ottawa area meetup later this summer. No date has been selected yet, so let him know if you are interested here! We are not aware of any other meetups being planned this year. If you are interested in doing something in your area, let everyone know and make it happen! Meetups are a great way to make new machining friends and get hands on help in your area. Don’t be shy, sign up and come, or plan your own meetup!

Other Salvaging old iron

Arbutus

Arbutus

Ultra Member
Premium Member
Well I has this offshore angle plate sitting on the shelf taking up room. It has probably been there 10 years or more and the sharpie markings that showed NOT SQUARE! was the reason why it was collecting rust.

It was also an awful machining job, with the slots unevenly spaced and between 11.5 and 13mm wide. One face seemed flat according to the surface plate, but the other face was not square - measuring 89:58" at one end and 89:49 at the other.
Casting inclusion72.jpg
Casting inclusion69.jpeg

But it looked like the casting was sound so I started cleaning it up. The 3/8-16 tapped holes on the ends I added for a clamp system. So far so good, and the tapped holes were nice and smooth, and amazingly there were no hard spots. Seriously I have found pebbles inside cast iron so I didn't have great expectations with this lump. Then I found this...
Casting inclusion67.jpeg
Casting inclusion66.jpeg


The pics show a white plastic inclusion inside the casting which was exposed as I cleaned out the slots. It seems to be about 1/4 dia and less than an inch long. Does anyone have some insight into what that is? It feels chalky, like Bondo. Easily excavated with a screwdriver.

After an hour on the mill and another with the grinder I have a fairly decent angle plate. It will look better after some paint though.

Don
 
Arbutus said:
Does anyone have some insight into what that is? It feels chalky, like Bondo.
Click to expand...

Looks like a gob of silicon adhesive that got into the pour and then got cooked to chalk. Easy to fill the casting void with steel filled epoxy that wouldn't affect its function.
 
You must log in or register to reply here.
Back
Top