1/18
Re: 1/18
I'm tired of waiting for the "bubblegum" to cure, so I'm going to remold the inner hub out of the last bit of hi-temp silicone left in the can. At least that stuff cures. Assuming I can get the leftover resin to work without foaming up, I'll make inner hubs for you guys and ship them with the rear rims.
"Two days ago, I saw a vehicle that would haul that tanker. You want to get out of here? You talk to me."
Re: 1/18
You guys weren't bidding against each other?
The work you guys are doing is looking great. As far as asking me about saleable kits, might as well leave me out of it, I'm only cheering you guys on at the moment.
Seeing your work really makes me want to jump in. I have a set of the zoomies for my 1:1 BoB. I can get some dimensions off of them, scale them down, and perhaps turn a set in lathe, if I have something small enough to use.
I've been busy working on gathering info for a screenplay I am developing as well as trying to find and make opportunities to pitch my finished screenplay, and in between that doing more research on the 351C engine. Oh, by the way, the 351C block in my 1972 Fairmont was cast 15 minutes from me at the Cleveland foundry here in Ohio. No, not the original block. I thought that was amusing though. The heads are 302C cc heads.
Steve
The work you guys are doing is looking great. As far as asking me about saleable kits, might as well leave me out of it, I'm only cheering you guys on at the moment.
Seeing your work really makes me want to jump in. I have a set of the zoomies for my 1:1 BoB. I can get some dimensions off of them, scale them down, and perhaps turn a set in lathe, if I have something small enough to use.
I've been busy working on gathering info for a screenplay I am developing as well as trying to find and make opportunities to pitch my finished screenplay, and in between that doing more research on the 351C engine. Oh, by the way, the 351C block in my 1972 Fairmont was cast 15 minutes from me at the Cleveland foundry here in Ohio. No, not the original block. I thought that was amusing though. The heads are 302C cc heads.
Steve
Re: 1/18
No, she was bidding for me. eBay is blocked at work, and the bidding ended while I was here, so I called her and asked her to place a last second bid for me. The guy must have been miffed. His avatar photo was even an AMX... scooped by a woman whose buying history includes such things as flowered pottery and linens. 
"Two days ago, I saw a vehicle that would haul that tanker. You want to get out of here? You talk to me."
Re: 1/18
Looks like the old resin's foaming action is under control [with the help of a steel weight] enough to make useable inner hubs. Good thing... I hate wasting resin. First two parts done... lots more to go.
"Two days ago, I saw a vehicle that would haul that tanker. You want to get out of here? You talk to me."
Re: 1/18
I brought the resin back from the dead!
Just for the hell of it I poured out the part A and part B bottles into separate beakers, placed both beakers into the vacuum chamber, and pulled vacuum on them for an hour. Immediately both began to boil. When I took them back out and cast a test part, no more foaming! Apparently there were a lot of dissolved gases in the resin that got squeezed out when it began to cure, causing foam. Now I know what to do if I ever have a similar problem.
Just for the hell of it I poured out the part A and part B bottles into separate beakers, placed both beakers into the vacuum chamber, and pulled vacuum on them for an hour. Immediately both began to boil. When I took them back out and cast a test part, no more foaming! Apparently there were a lot of dissolved gases in the resin that got squeezed out when it began to cure, causing foam. Now I know what to do if I ever have a similar problem.
"Two days ago, I saw a vehicle that would haul that tanker. You want to get out of here? You talk to me."
Re: 1/18
Thanks, but I'm just a cheap guy with a home made vacuum chamber and too much time on my hands.Madmaxing wrote:Wow, you are quite the resourceful guy. I never would have thought of that.
Saved myself $40. I spent it all on silicone.
"Two days ago, I saw a vehicle that would haul that tanker. You want to get out of here? You talk to me."
Re: 1/18
draknoir2 wrote:Thanks, but I'm just a cheap guy with a home made vacuum chamber and too much time on my hands.Madmaxing wrote:Wow, you are quite the resourceful guy. I never would have thought of that.
Saved myself $40. I spent it all on silicone.
I don't think your wife would be too happy with only $40.......OH! Silicone for molding. Excellent way to finance the hobby, anywhere you can salvage anything.
Sorry, couldn't let that one go by.
What purpose, not being real familair with the casting techniques you do, did you build the vacuum chanber for and how did you go about making it?
Steve
Re: 1/18
The chamber is for "de-airing" mixed 2 part silicone or resin. When you stir them up air gets worked into the mix. When you put them in a vacuum chamber, the gases boil out, leaving a homogeneous mixture free of bubbles. If you don't do this you will wind up with voids or balls on your castings. The resin I had was old and contaminated, and being urethane, it tended to foam up when cured.
I made the chamber out of a stainless steel cannister with a rubber-gasketed, 1/2" thick lexan top, and plumbed it to a vacuum pump. It's also tied into my workbench automation and can be turned off, and the vacuum/pressure level read from a touch screen control. I can also control the lights, melting pot, and reset all the computers in the house from the same screen.
I made the chamber out of a stainless steel cannister with a rubber-gasketed, 1/2" thick lexan top, and plumbed it to a vacuum pump. It's also tied into my workbench automation and can be turned off, and the vacuum/pressure level read from a touch screen control. I can also control the lights, melting pot, and reset all the computers in the house from the same screen.
"Two days ago, I saw a vehicle that would haul that tanker. You want to get out of here? You talk to me."