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  Topic: Hardi Backer and Cement Board
Culvan

Replies: 38
Views: 46440

PostForum: Vacuum Forming & General Stuff   Posted: Wed Mar 16, 2011 8:10 am   Subject: Hardi Backer and Cement Board
I think some US pennies are copper plated zinc but I may have that wrong?


You are correct, ever since 1982 pennies in the US have been made of zinc. Since this threat is already talking about no ...
  Topic: thermoforming
Culvan

Replies: 2
Views: 1959

PostForum: Vacuum Forming & General Stuff   Posted: Tue Mar 08, 2011 4:21 am   Subject: thermoforming
Based on the time of day you are posting and a few grammatical clues, I'm guessing you are not in the United States. I'm not entirely certain I've understood your question so I'll restate it to make ...
  Topic: Bat Cowl Creation - (Pics) Sculpt to Vacuum Forming Foamies
Culvan

Replies: 8
Views: 18628

PostForum: Costumes & Equipment   Posted: Fri Nov 05, 2010 7:59 am   Subject: Bat Cowl Creation - (Pics) Sculpt to Vacuum Forming Foamies
Nice work. There are many elements in this I'd like to see. Sadly, it is clear that I lack your sculpting skills. That won't stop me from enjoying your process.

Andy
  Topic: fumes? where to buy?
Culvan

Replies: 5
Views: 2980

PostForum: Vacuum Forming & General Stuff   Posted: Wed Sep 22, 2010 8:38 am   Subject: Re: fumes? where to buy?
I am currently in the process of building my first vacuforming machine, just a piece of wood with a hole, a small and simple machine to be run with a toaster oven and shopvac. Next version will be big ...
  Topic: Hello
Culvan

Replies: 4
Views: 2887

PostForum: Introduce Yourself   Posted: Mon Aug 23, 2010 9:57 am   Subject: Re: Hello
And so for a first question. Could you put fiberglass on the back (inside part) of say a plastic formed stormtrooper (mainly for back of legs) so that it could better resist damage when sitting down o ...
  Topic: math on my holding tank vol on 20' x4"pvc
Culvan

Replies: 3
Views: 2084

PostForum: Vacuum Forming & General Stuff   Posted: Tue Jul 20, 2010 1:30 am   Subject: math on my holding tank vol on 20' x4"pvc
4" schedule 40 PVC pipe has an inside diameter of 3.998". That changes your math by ~.15 cubic inches per linear foot or 0.1%.

I really like this site, but his notes on pipe are very ...
  Topic: Toy Guns with Sounds and Lights - Help
Culvan

Replies: 10
Views: 19766

PostForum: Weapons Locker   Posted: Mon Jun 21, 2010 12:55 pm   Subject: Toy Guns with Sounds and Lights - Help
Wow, this thread is a blast from the past. I've moved on from this project, but there was one thing I found that probably would've been good to mention in this thread. Radio Shack carries a "9V ...
  Topic: Hobbyist Injection Moulding?
Culvan

Replies: 9
Views: 9426

PostForum: Injection Moulding & Other Technology   Posted: Mon May 03, 2010 3:49 pm   Subject: Re: EPP can be formed
I thought about doing the same some years back but it's much easier to vac-form the wings and fuselage and glue it together form thin lexan sheets... or even cheap plastic sheets.
I fly RC when I hav ...
  Topic: Why are some Makerbot parts laser cut?
Culvan

Replies: 8
Views: 9337

PostForum: Injection Moulding & Other Technology   Posted: Fri Apr 16, 2010 12:02 am   Subject: Why are some Makerbot parts laser cut?

Um, I still don't see why you just can't turn off 3D printing functionality and just have the electronics control the steppers for the router?

Is it not compatible with G-Code?
I suppose it woul ...
  Topic: Why are some Makerbot parts laser cut?
Culvan

Replies: 8
Views: 9337

PostForum: Injection Moulding & Other Technology   Posted: Wed Apr 14, 2010 5:33 am   Subject: Why are some Makerbot parts laser cut?

You just gave me an idea!


I think the reason Maker Bot/RepRap have separate electronics is because of the print head.

However, I think that for a combo machine if you could somehow find a wa ...
  Topic: Why are some Makerbot parts laser cut?
Culvan

Replies: 8
Views: 9337

PostForum: Injection Moulding & Other Technology   Posted: Tue Apr 13, 2010 8:32 am   Subject: Why are some Makerbot parts laser cut?
Of course, just wondering if it can be done any cheaper than the cost of renting a laser cutter. LaughingI suspect it's cheaper if you already have the Laser cutter and have to rent the CNC.

This is w ...
  Topic: 3d Modeling - K9
Culvan

Replies: 16
Views: 18228

PostForum: Injection Moulding & Other Technology   Posted: Fri Apr 02, 2010 2:14 pm   Subject: 3d Modeling - K9
The added benefit, would be specifying how the inside should be milled as well. If you are going to attach motors and other moving parts to give the prop the same functionality as the screen-used prop ...
  Topic: Tool Agnostic Designs?
Culvan

Replies: 14
Views: 13293

PostForum: Injection Moulding & Other Technology   Posted: Thu Mar 25, 2010 9:27 am   Subject: Tool Agnostic Designs?
I've been looking into plastruders a bit more. It looks like Reprap and Makerbot/Cupcake originated from the same electronics and plastruder. The chassis are different and I can't tell if they are d ...
  Topic: What about clay as a vacuum forming material?
Culvan

Replies: 4
Views: 7056

PostForum: Injection Moulding & Other Technology   Posted: Mon Mar 22, 2010 10:05 am   Subject: What about clay as a vacuum forming material?
It will reproduce the object.
It is dimensionally stable.
It is thermally stable below the Tg of the plastic we are molding.
It is durable.
It makes sense cost wise.


Nice list and a good anal ...
  Topic: My Dream Material
Culvan

Replies: 9
Views: 7150

PostForum: Injection Moulding & Other Technology   Posted: Thu Mar 18, 2010 1:23 am   Subject: My Dream Material
If the goal is to have a material that goes from a liquid to a solid then there are a number of resins out there that fit the bill. If you also want something with heat tolerance then I believe that ...
 
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