Doctor Who Key to Time complete!

Kestre

Member
This project has been going on for a very long time. Two years ago, I started searching for someone to make this prop for my boyfriend. I got some bids, and chose one.

Twenty-two months later... we have

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as well as the other five. Nice teaser, isn't it?

I'm going to walk through our process a bit, and yes, show you the rest of the photos.
 
It was before I knew about RPF, so it was quite a challenge finding someone who was willing to make this prop in my price range (which I eventually exceeded by the time the project completed).

I contacted an artist who makes figures and does molding/casting. He agreed to give it a go. First we did our research into each piece. We had to decide on the size of each piece, the actual shapes, and dimensions of the center holes. The thread on tardisbuilders, the google sketch up, and the paper model were all helpful in getting us going. Our decisions were very similar to Dalex's excellent overview in his thread here. We decided on 6" lengths and 0.5" center holes.

Our artist spent about 9 months trying to create shell versions of the pieces (without the holes cut out) to mold. He had a lot of trouble with these pieces staying together and being usable for molding. Eventually, he had to give up on this method.

I looked into alternatives. We looked into CNC machining the pieces, acrylic, and wood. We decided on the wood because of the price and because it's true to how the original prop was made (as far as we understand). We found the wood worker through RPF.

Finally, the wood pieces arrived:

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Here is a shot of one of the pieces:

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You can see it's MDF. Another shot of all the pieces:

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We were very careful at this stage not to hurt any of the pieces!

This takes us up to February of 2012.
 
While the guy who made the casts can't commit to a run, he's willing to do a few. If anyone's interested, you can PM me for his contact info.

Continuing onwards...

i-2cnR3nZ-M.jpg


Here is the beautiful lid for the box made for us to house the wood pieces in. I heard back from the woodcrafter, and he's happy for me to share his info. He loves custom projects like this one. He's the dad of an RPFer, xtcofpain. I just sent him the finished cube photos today. I bet he was wondering if it was ever going to get done!

So, we got the wood pieces. Drooled over them for a few days, and sent them off to our artist who promised to mold and cast.

You guys know how hard it is to mold and cast into clear resin. It took him several months of testing. Here is one of his early casts straight from the mold:

i-7W2Kxhp-M.jpg
 
And onwards.

So, he worked on the making the casts pretty and smooth. Here is his workbench:

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I won't be able to explain what he ended up doing to get it smooth, but he was able to come up with a technique that worked:

i-NKhqc7V-M.jpg
 
As Kestre stated, it was a project of Odyssian proportions. I'm the artist who took on the task of molding and casting (after unsuccessfully attempting the master pieces). I'll spare the gory details on my attempts to create the masters, except to say that I made ten versions of them. The challenge was getting the pieces to fit snugly based on the original design. Jump ahead to the MDF masters. They also needed a lot of work. About two weeks of bondo, sanding, priming, more sanding, re-priming and then polishing, they got to a point they could be cast.

The molds are huge, and since I figured the only way to earn anything on this would be to make multiples, the molds are made of silicone. The castings are Cast'n Craft resin. It takes two gallons to make a finished cube and three weeks to cure the resin enough to polish it. Since the pieces are so large, I experimented in casting in layers, as the original one was. This doesn't work as well as one might think. What can't be seen in the tv stills is that there is banding in the acrylic if cast this way. It would work great for 80's British television, but wouldn't pass muster when inspected up close. So I started casting the whole piece at once. Each one takes between 20-40 ounces of resin. The manufacturer does not recommend castings thicker than 1/2". The result is non-linear shrinkage. Essentially, the thicker areas concave due to the excessive heat of curing while the corners and thinner areas remain fine. So to combat this, I ended up casting them whole, letting them shrink and cure, then removing them from the mold. I would then mix up a small batch of resin and add it to the mold. Then I'd take the first cast and put it back in, allowing the liquid resin to envelope the cast piece, creating a shell less than a 1/4" at it's thickest, which meant no shrinkage. But this finished pieces remain tacky for weeks. While mine was fully curing, I contacted all the acrylic casting places near me to see if they could create the finished pieces from my molds or post-cure/clean pieces I create. A bunch turned me away, a few said they'd look into it, and one gave it a shot. Weeks later they figured out it was beyond their expertise and gave up. This was about a week ago. So I went back to get the pieces and molds and then spent a few days cleaning them up and polishing again. And now we are here.

I'd be ok with producing more, but the pieces are highly toxic in liquid form (so I cast them outside about fifty feet from my house) and take a lot of material and time. Most of the time is post-cure, then about five days of sanding and polishing. I'll be honest here with material cost, as anyone can look it up on the web. Each gallon kit of Cast'n Craft is $100 plus $10 per gallon kit for extra hardener. It takes two gallons to make a cube. So $220 just for materials. Add in labor and finishing equipment (it's all wet sanding, BTW) and we get to $800-$900 per cube. I know that's out of price range for most, so there are a couple of options here. The first would be to ship the pieces unfinished, straight from the molds. They'd run $400, and I'd include the process to get them finished. The other option would be to purchase pieces one at a time. This option would allow someone to pace themselves cost-wise but still have the Whovian adventure of collecting all six segments. The final cost would be the same as the finished cube. Since my account is new, I can't offer to sell anything here, but contact Kestre to get my contact info. Plus, I'll add it to my store and that should be Internet searchable. Hope this helps (and gives a better look into the process)
 
In case my last post gets deleted because of mentions of selling the piece, since I've not been a member for 45 days and had 20 other posts, you'll be able to find the entire transcript on my blog: http://paulpape.tumblr.com/
 
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As Kestre stated, it was a project of Odyssian proportions. I'm the artist who took on the task of molding and casting (after unsuccessfully attempting the master pieces). I'll spare the gory details on my attempts to create the masters, except to say that I made ten versions of them. The challenge was getting the pieces to fit snugly based on the original design. Jump ahead to the MDF masters. They also needed a lot of work. About two weeks of bondo, sanding, priming, more sanding, re-priming and then polishing, they got to a point they could be cast.

The molds are huge, and since I figured the only way to earn anything on this would be to make multiples, the molds are made of silicone. The castings are Cast'n Craft resin. It takes two gallons to make a finished cube and three weeks to cure the resin enough to polish it. Since the pieces are so large, I experimented in casting in layers, as the original one was. This doesn't work as well as one might think. What can't be seen in the tv stills is that there is banding in the acrylic if cast this way. It would work great for 80's British television, but wouldn't pass muster when inspected up close. So I started casting the whole piece at once. Each one takes between 20-40 ounces of resin. The manufacturer does not recommend castings thicker than 1/2". The result is non-linear shrinkage. Essentially, the thicker areas concave due to the excessive heat of curing while the corners and thinner areas remain fine. So to combat this, I ended up casting them whole, letting them shrink and cure, then removing them from the mold. I would then mix up a small batch of resin and add it to the mold. Then I'd take the first cast and put it back in, allowing the liquid resin to envelope the cast piece, creating a shell less than a 1/4" at it's thickest, which meant no shrinkage. But this finished pieces remain tacky for weeks. While mine was fully curing, I contacted all the acrylic casting places near me to see if they could create the finished pieces from my molds or post-cure/clean pieces I create. A bunch turned me away, a few said they'd look into it, and one gave it a shot. Weeks later they figured out it was beyond their expertise and gave up. This was about a week ago. So I went back to get the pieces and molds and then spent a few days cleaning them up and polishing again. And now we are here.

I'd be ok with producing more, but the pieces are highly toxic in liquid form (so I cast them outside about fifty feet from my house) and take a lot of material and time. Most of the time is post-cure, then about five days of sanding and polishing. I'll be honest here with material cost, as anyone can look it up on the web. Each gallon kit of Cast'n Craft is $100 plus $10 per gallon kit for extra hardener. It takes two gallons to make a cube. So $220 just for materials. Add in labor and finishing equipment (it's all wet sanding, BTW) and we get to $800-$900 per cube. I know that's out of price range for most, so there are a couple of options here. The first would be to ship the pieces unfinished, straight from the molds. They'd run $400, and I'd include the process to get them finished. The other option would be to purchase pieces one at a time. This option would allow someone to pace themselves cost-wise but still have the Whovian adventure of collecting all six segments. The final cost would be the same as the finished cube. Since my account is new, I can't offer to sell anything here, but contact Kestre to get my contact info. Plus, I'll add it to my store and that should be Internet searchable. Hope this helps (and gives a better look into the process)


I think it might be slightly disingenuous to pass comment on the quality of the master blocks supplied to you, when you tried yourself to manufacture the masters 10 times, and couldn,t.

I assume that the masters were supplied to your client as per the brief he received, and met that brief.

turner
 
I was passing no judgement, just stating that they weren't in a cast able condition. I'm assuming you are the maker, and they worked fine, they just needed to be smoothed to create a smooth finished product. I meant no disrespect.
 
Hi,

I just wanted to make sure that I fulfilled my brief as outlined by the client. I do understand that you had to do more prep work prior to casting, and I must say they do look excellent.

And yes, I am the maker of the master blockset.:lol They were made in about 2 weeks, and are the first and only set I made. And it was an enjoyable project to take part in.

turner
 
Wow, they turned out really nice! Very impressed. It's also fascinating to read the back story, I'm glad everything worked out in the end.

I'm still waiting to do my run of the Key to Time, hopefully that'll happen within the next couple of months.

Cheers,
 
Thanks! I'm glad both Paul and Turner were able to participate. They can give all the gory details :)

For now, I'll post photos of the whole set on the table. Later, I'll try to post the closeups of each individual piece.

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Friendly bump for new eyes. I'll be getting the pieces in the mail in the next week or two. Then I'll be able to take more photos for anyone interested.
 
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