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Jumbo MK3 MouldSKU: JJJBBM.KO.OB
Block Accessory/Variant JJJ Machine MK3 Mould
The JJJBBM.KO.OB is a heavy-duty interchangeable mould unit designed for the Doubell Jumbo MK3 brick making machine to produce Block Accessory/Variant bricks.
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Knock-out Block
M6 Knock-Out Block (Open Bottom)
Model: BBM.KO.OB
Knock-Out M6 Block (Open Bottom). Features pre-weakened sections to easily create channels for horizontal reinforcement or piping. Has an open-bottom cavitiy for vertical (rebar) reinforcement and concrete pouring to create a strengthened solid wall.
Dimensions
- L: 390 mm
- W: 190 mm
- H: 140 mm
Family
BBM
Compatible Machine

MK3 Range
Doubell Jumbo MK3 Manual "egg-layer" Brick Machine (Mould not included)
Doubell Jumbo MK3 Manual "egg-layer" Brick Machine (Mould not included)
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Est. Volume
0.00599 m³
Est. Mass
11.97 kg
Cost Per Brick (ZAR)
5.19
Cement: ZAR 2.63
Sand: ZAR 1.88
Stone: ZAR 0.51
Labor: ZAR 0.17
Production Forecasting
DIY Hand Mould
DIYBBM.KO.OB
500
(1 min cycles @ 100% efficiency)
1
500
Bricks / Day
Jumbo MK2
JJM + JJBBM.KO.OB
500
(1 min cycles @ 100% efficiency)
3
1500
Bricks / Day
Jumbo MK3
JJJM + JJJBBM.KO.OB
500
(1 min cycles @ 100% efficiency)
7
3500
Bricks / Day