Hey folks, I made this crazy thing back for Gallifrey one last year and never posted the build thread until someone recently reminded me.
I made it from a combination of Foam Core, and Harbor Freight floor mats. It took only 5 days (4 for the body, arms, and legs.) I made the head at Gallifrey in the cosplay hall while people came and went. That I have no photos of, save the final pics. But I think that was about 2 hours, give or take. I hope all you old school Tom Baker fans appreciate! 
The shoulder was created with a base of Floor mats, then thin 1/8" foam cut into strips by my assistant, then carefully glued on, starting at the bottom edge and working backwards to the top.

Doctor Who K1 build 01 by malsfantasyfactory, on Flickr

Doctor Who K1 build 02 by malsfantasyfactory, on Flickr
The lower arm was a combination of foam core tube, which we v cut in lines and then glued into place to give it that hexagon shape. Then I made foam tubes with thin strips on the edges and glued the foam core into the middle. The claw was inserted into the cover and a detail glued to hold it in place.

Doctor Who K1 build 03 by malsfantasyfactory, on Flickr
The assembled Arm with it's claw detail!

Doctor Who K1 build 04 by malsfantasyfactory, on Flickr
The stomach area was made of foam core strips, cut and glued in a stacked pattern, like steps in a house. Had to figure out the math to cut each strip the right length then glue in order. Time consuming, but worth it!

Doctor Who K1 build 05 by malsfantasyfactory, on Flickr
I had to cut about 2" out of the middle, that's what the duct tape is for.

Doctor Who K1 build 06 by malsfantasyfactory, on Flickr
The first shoulder in place with the upper chest in process with foam mats.

Doctor Who K1 build 07 by malsfantasyfactory, on Flickr
The other shoulder assembled.

Doctor Who K1 build 08 by malsfantasyfactory, on Flickr
The Chest is almost done! Using more floor mats, I fill in the center, I will cut out the head and neck hole later.

Doctor Who K1 build 09 by malsfantasyfactory, on Flickr
First Test fit! Not bad so far!

Doctor Who K1 build 10 by malsfantasyfactory, on Flickr

Doctor Who K1 build 11 by malsfantasyfactory, on Flickr

Doctor Who K1 build 12 by malsfantasyfactory, on Flickr
Looks like I need some tubes to cover my arms and transition to the lower arms.

Doctor Who K1 build 13 by malsfantasyfactory, on Flickr
The upper leg foam core parts just cut and waiting to be assembled. The Leg joints were a soft foam that my wife spent an hour carefully burning these lines into.
Doctor Who K1 build 14 by malsfantasyfactory, on Flickr
The bottom calf area of the legs.

Doctor Who K1 build 15 by malsfantasyfactory, on Flickr
The legs assembled and waiting for plasti-dip.

Doctor Who K1 build 16 by malsfantasyfactory, on Flickr
The Leg Joints getting glued on the edges to create the full ring. This is the Glue I use, it's very thin and brushable and takes less then a minute with a hair dryer to set.

Doctor Who K1 build 18 by malsfantasyfactory, on Flickr
Being sure to carefully try to match lines to each other. (Not that I actually succeeded mind you.:lol)

Doctor Who K1 build 19 by malsfantasyfactory, on Flickr
The Arm painted with the first leg being dipped.

Doctor Who K1 build 20 by malsfantasyfactory, on Flickr
The legs assembled and plasti-dipped.

Doctor Who K1 build 21 by malsfantasyfactory, on Flickr
The feet in process, the sides had a multi layered effect that had to be glued together first.

Doctor Who K1 build 22 by malsfantasyfactory, on Flickr
Then the feet could be glued to the fronts, which also were multi-layered.

Doctor Who K1 build 23 by malsfantasyfactory, on Flickr
The waist detail was a crazy idea of foam core pieces with a v cut in the middle bent and glued into this mountain shape. Then aprox 50 of these were made and hot-glued into strips on the 4 sides of the waist.

Doctor Who K1 build 24 by malsfantasyfactory, on Flickr
Foam strips were added to clean up the edges of the waist detail and then all the sides assembled.

Doctor Who K1 build 25 by malsfantasyfactory, on Flickr
Ankle detail plasti-dipped and ready for painting.

Doctor Who K1 build 26 by malsfantasyfactory, on Flickr
The Feet with hard foam risers cast in. (sorry I don't have a photo of that.:cry)

Doctor Who K1 build 27 by malsfantasyfactory, on Flickr
The finished robot at Gallifrey one convention. Scott Sebring took the very proffesional photos!

Doctor Who K1 Robot 36 by malsfantasyfactory, on Flickr
My wife next to me is 5' 6"

Doctor Who K1 Robot 42 by malsfantasyfactory, on Flickr
I won a prize at Gally that year too!

K1 Gally Prize winner by malsfantasyfactory, on Flickr
Thanks for looking, feel free to check out my other Doctor Who builds and leave critiques and comments.
The shoulder was created with a base of Floor mats, then thin 1/8" foam cut into strips by my assistant, then carefully glued on, starting at the bottom edge and working backwards to the top.

Doctor Who K1 build 01 by malsfantasyfactory, on Flickr

Doctor Who K1 build 02 by malsfantasyfactory, on Flickr
The lower arm was a combination of foam core tube, which we v cut in lines and then glued into place to give it that hexagon shape. Then I made foam tubes with thin strips on the edges and glued the foam core into the middle. The claw was inserted into the cover and a detail glued to hold it in place.

Doctor Who K1 build 03 by malsfantasyfactory, on Flickr
The assembled Arm with it's claw detail!

Doctor Who K1 build 04 by malsfantasyfactory, on Flickr
The stomach area was made of foam core strips, cut and glued in a stacked pattern, like steps in a house. Had to figure out the math to cut each strip the right length then glue in order. Time consuming, but worth it!

Doctor Who K1 build 05 by malsfantasyfactory, on Flickr
I had to cut about 2" out of the middle, that's what the duct tape is for.

Doctor Who K1 build 06 by malsfantasyfactory, on Flickr
The first shoulder in place with the upper chest in process with foam mats.

Doctor Who K1 build 07 by malsfantasyfactory, on Flickr
The other shoulder assembled.

Doctor Who K1 build 08 by malsfantasyfactory, on Flickr
The Chest is almost done! Using more floor mats, I fill in the center, I will cut out the head and neck hole later.

Doctor Who K1 build 09 by malsfantasyfactory, on Flickr
First Test fit! Not bad so far!

Doctor Who K1 build 10 by malsfantasyfactory, on Flickr

Doctor Who K1 build 11 by malsfantasyfactory, on Flickr

Doctor Who K1 build 12 by malsfantasyfactory, on Flickr
Looks like I need some tubes to cover my arms and transition to the lower arms.

Doctor Who K1 build 13 by malsfantasyfactory, on Flickr
The upper leg foam core parts just cut and waiting to be assembled. The Leg joints were a soft foam that my wife spent an hour carefully burning these lines into.

The bottom calf area of the legs.

Doctor Who K1 build 15 by malsfantasyfactory, on Flickr
The legs assembled and waiting for plasti-dip.

Doctor Who K1 build 16 by malsfantasyfactory, on Flickr
The Leg Joints getting glued on the edges to create the full ring. This is the Glue I use, it's very thin and brushable and takes less then a minute with a hair dryer to set.

Doctor Who K1 build 18 by malsfantasyfactory, on Flickr
Being sure to carefully try to match lines to each other. (Not that I actually succeeded mind you.:lol)

Doctor Who K1 build 19 by malsfantasyfactory, on Flickr
The Arm painted with the first leg being dipped.

Doctor Who K1 build 20 by malsfantasyfactory, on Flickr
The legs assembled and plasti-dipped.

Doctor Who K1 build 21 by malsfantasyfactory, on Flickr
The feet in process, the sides had a multi layered effect that had to be glued together first.

Doctor Who K1 build 22 by malsfantasyfactory, on Flickr
Then the feet could be glued to the fronts, which also were multi-layered.

Doctor Who K1 build 23 by malsfantasyfactory, on Flickr
The waist detail was a crazy idea of foam core pieces with a v cut in the middle bent and glued into this mountain shape. Then aprox 50 of these were made and hot-glued into strips on the 4 sides of the waist.

Doctor Who K1 build 24 by malsfantasyfactory, on Flickr
Foam strips were added to clean up the edges of the waist detail and then all the sides assembled.

Doctor Who K1 build 25 by malsfantasyfactory, on Flickr
Ankle detail plasti-dipped and ready for painting.

Doctor Who K1 build 26 by malsfantasyfactory, on Flickr
The Feet with hard foam risers cast in. (sorry I don't have a photo of that.:cry)

Doctor Who K1 build 27 by malsfantasyfactory, on Flickr
The finished robot at Gallifrey one convention. Scott Sebring took the very proffesional photos!

Doctor Who K1 Robot 36 by malsfantasyfactory, on Flickr
My wife next to me is 5' 6"

Doctor Who K1 Robot 42 by malsfantasyfactory, on Flickr
I won a prize at Gally that year too!

K1 Gally Prize winner by malsfantasyfactory, on Flickr
Thanks for looking, feel free to check out my other Doctor Who builds and leave critiques and comments.