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1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1

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1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1
1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1
1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1

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1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1
1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1

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1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1
1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1

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1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 3d render showing product detail
1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 3d render showing product detail

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1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 3d render showing product detail
1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 3d render showing product detail

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1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 3d render showing product detail
1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 3d render showing product detail

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1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 3d render showing product detail
1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 3d render showing product detail

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1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 3d render showing adjustable barrels
1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 3d render showing adjustable barrels

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1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 3d render showing adjustable barrels
1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1 3d printed 3d render showing adjustable barrels

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1/48 4.7"/50 (12 cm) QF MKXI L & M Class Gun x1

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Product Description
1/48 Scale 4.7"/50 (12 cm) QF MKXI L & M Class Destroyer Gun in Twin MKXX Mounting x1. Very highly detailed model created from plans and using many reference photographs to make these the most accurate 4.7"/50 (12 cm) QF MKXI L & M Class Destroyer Guns available. These mounts are big for destroyer guns! for example the barrel axis (96") on these is only a few Inches apart less than the 15" mounts on the Hood.
  • 1x Mount
  • Highly detailed, modelled from plans and photographic reference.
  • Barrels are printed separately and can be angled as desired
  • Ladders are printed separately to minimise wax contact with Turret Gun shield (Ladder mounting points are printed on the Turret)
  • details include Hex nuts, Ladders, Open Sighting Ports, Accurate Venting and Access Hatches

Historical Data
By 1938, the Admiralty recognized that British destroyers compared badly with their USA and Japanese counterparts, as they were lacking DP main guns and weather-proof mounts. The 4.7"/50 (12 cm) Mark XI guns and Mark XX twin mounting were intended to correct these deficiencies. These guns fired a heavier shell of more modern design and their mountings allowed higher elevations than did most other British guns of this caliber. However, their slow training rate and manually operated elevation gear limited their usefulness in the AA role and for that reason many of these destroyers had the after torpedo mounting replaced during World War II with a single 4" (10.2 cm) Mark V HA gun.

In my opinion, this was Britain's best destroyer gun of World War II for surface action, although its low maximum elevation and slow training and elevation speeds made it only marginally useful for anti-aircraft defense. Unfortunately, the cost and size of these destroyers was so much greater than the previous designs that only a few were built and newer destroyers reverted to a smaller size and were armed with the cheaper 4.7"/45 (12 cm) guns.

The guns were in separate sleeves and could not be coupled together. The mountings used hydraulic systems for training, ramming and shell hoists. They were quite complicated, which resulted in long production delays and caused four of the L class destroyers to be completed with four twin 4" (10.2 cm) Mark XIX mounts in place of the 4.7" (12 cm) mounts.

There was some thought given in 1938 to developing a hand-worked single mounting using the 4.7"/50 (12 cm) gun. This would have been used to arm the first of the War Emergency destroyers (O and P classes). Development of this design was slow and instead these destroyers were armed with old 4"/45 (10.2 cm) Mark V and 4.7"/45 (12 cm) Mark IX guns.

In 1958 four "M" class destroyers were sold to Turkey and then extensively refitted. One of the modifications was to add power elevation, thus correcting one of the major deficiencies of this mounting.

Constructed of autofretted loose barrel, jacket to 85 inches (216 cm) from the muzzle, removable breech ring and sealing collar. Used a manually operated breech mechanism with semi-automatic breech opening. A total of 87 guns were manufactured.

Actual bore diameter of all British 4.7" guns was 4.724" (12 cm).


Cleaning Information
Some part cleanup will be necessary. The 3D printing process uses a waxy substance to support certain part features during the printing process. Although the parts are cleaned by Shapeways, some waxy residue may remain.  It can be safely removed with water and a mild aqueous detergent like "Simple Green" using an old, soft toothbrush, Q-tips or pipe cleaners. During the printing process, liquid resin is cured by ultraviolet light. Microscopic bits of resin may remain uncured.

Let your parts sit in direct sunlight for a few hours to fully cure the resin.  
Water-based acrylic paints meant for plastics is strongly recommended. Other paints, especially enamels, may not cure on Frosted Detail 3D-printed plastics.
Use dedicated model sprue cutters to remove parts to minimise the risk of damage to parts.
Please take a look at my other items.      

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Details
What's in the box:
48 4.7" MKXX Gun Sprue.stl
Dimensions:
9.48 x 23.94 x 6.96 cm
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3.73 x 9.43 x 2.74 inches
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Success Rate:
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Rating:
Mature audiences only.
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