Hi
I read where you were getting round tube to go into the carpet Bob in, anyway I found a reference about the construction of the bobbin in the Churchill in Canadian service by mark w tonner.
Anyhow the device was issued to the Calgary tank regt there were two types adapted for the Churchill in 42. The type of cld used at Dieppe carried a 9 foot 11 inch 3 metre wide by 25 to 30 feet(7.1 to 9.1 metres) long mat of chespaling on a single spindle supported by short arms above the front horns of the tank. Chespaling was flexible roll fencing similar to wood slat snow fencing, but made with tough split slats made of chestnut wood. So as not to obstruct the main or secondary armament of the tank once the mat had been laid the cld could be jettisoned from the tank by means of a small explosive charge fired electrically from the turret. For the landing at Dieppe it was planned that the first tank in each tank landing craft was fitted with the cld. Five tanks T31124R(Chief), T68173 (Cougar), T31135R(Burns), T31655 (Buttercup), and T68557R (Bob) were fitted with the cld and issued to the Calgary regt in June 42. All five were lost to enemy action on the beach at Dieppe; only two were able to successfully lay the chespaling. T = Tank, R = Reworked.
MK III - buttercup, cougar, Bob,
MK I - chief, burns
I thought that you could use the info regarding the construction of the carpet. I have other Churchill books but they are packed away right now so I can't say whether I have a pic of one of these or not but the description is absolutely clear and at least here in Canada we are familiar with the comparison to a snow fence. I have several AFC churchills and I guess they will be selling me another god help me should they bring out the bridge layer. Anyways I hope this is helpful for those that wish to model one at Dieppe.