The Land Mattress was a British and Canadian designed adaptation of an unguided anti-aircraft rocket launcher system developed in the mid war period in the United Kingdom. It was employed in the later war North West European theatre by the Canadian and British Armies.
I developed this design to fill the dearth of available multiple rocket launchers from Commonwealth Bolt Action players – the Germans have their Nebelwefer and Howling Cows, the Soviets have their Katyushas and even the Americans get the T-27 Xylophone Rocket Launcher. I wasn’t able to find a 28mm scale Land Mattress model commercially. The designs seem to have been quite variable in their construction; some have four tiers of rocket tubes; others five. I modeled this one mostly from the one located at the Canadian War Museum (photo in this post).
Please note that I STRONGLY recommend you print the barrel tubes on a raft. The support material is very difficult to clean out without damaging the tube ends if you don’t.
I used a “fine setting”. All files are loaded as a I would suggest they be printed – e.g. barrels pointed up; the carriage flipped. The wheels have “nubs” on the reverse side (facing the printer bed); they will clean out easily post print and fit the axle quite nicely.
Forgive me for being a little Type A, but’
1) please be careful removing the support material. It is difficult on small models to immediately know what is support and what you want to keep.
2) the towing tongue piece is best glued last; once you have all the other pieces assembled. that way it can contact the ground at the correct angle. Again, please refer to the photos of the actual weapon in service and place it accordingly. I made the towing tongue “friction fit” into the carriage to ease placement.
3) the launcher tubes have two sets of “nubs” on the bottom piece (please see my captioned pic); these will fit into the carriage. Please refer to the photo to ensure the tubes are placed with the front forward.
I have added a screen capture from the CAD to show some of the assembly. The arrow “#1” indicates the direction the barrel selection needs to go; the bottom support nudges the back of the axles support, if that makes sense (it will when you test fit it). Please note the short end of the barrels goes to the rear (this is the end that would be flat to your printer’s build plate), the longer section points forward.
“#2” indicates the position of the tongue. I suggest assembling the carriage, wheels and rockets and then dry fit the tongue to the appropriate angle – e.g. the land mattress resting back on the spades, and them have the end of the tongue so that it rests on the ground/table. The fit may be snug, or if it is a little loose (so much depends on the print) just hold it and give a dab of CA glue and let the tongue dry at the right angle, so that the back spades and tongue piece are all touching the ground.
I hope this helps, if you have any other questions, please let me know.
Sold By deweycatproductions Report Abuse

Report an abuse for product Land Mattress Multi-barrel rocket launcher

Categories: , , , , Tags: , , , , , , , , , Product ID: 1751


Deweycat Productions

Owned, operated and licensed by Marc A. LaPlante

Creative Commons Attribution-Non Commercial-No Derivatives 4.0 International Public License

  1. RE : Applicable to all licensed material any other intellectual property, of Marc LaPlante and/or Deweycat Productions
  2. Licensed Material means the artistic or literary work, database, or other material to which the Licensor applied this Public License.
  3. By exercising the Licensed Rights (defined below), You accept and agree to be bound by the terms and conditions of this Creative Commons Attribution-Non-Commercial-No Derivatives 4.0 International Public License (“Public License”).
  4. This license allows the purchaser the use of specific licensed material for personal use only.
  5. Any and all use of this licensed material for any commercial use, for sale or for profit is strictly forbidden. The commercial sale of any product manufactured/printed/made through the use of this licensed material is strictly forbidden by the terms of this license.
  6. The permission to use this item, extended to the purchaser in this license, is not transferable in any way. Any use of this item/file by any person(s) other than the actual purchaser will be considered a breach of this license.
  7. The seller / creator of this licensed material, that being Marc LaPlante / Deweycat Productions maintains the full ownership of the intellectual property of all licensed material, in any format, that is offered or sold under the name of Marc LaPlante and/or Deweycat Productions.
  8. No term or condition of this Public License will be waived and no failure to comply consented to unless expressly agreed to by the Licensor.
  9. Nothing in this Public License constitutes or may be interpreted as a limitation upon, or waiver of, any privileges and immunities that apply to the Licensor or You, including from the legal processes of any jurisdiction or authority.


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Questions and Answers

You are not logged in

Contact Us