MagnaBloc – A high impact, polymer body containing powerful magnets and a release screw. Suitable for both precast and site concrete production.

In addition to our MagnaBloc we also stock a wide range of other concrete consumables. Our full product range includes an extensive choice of other moulds. From our market leading fencing systems, to a full range of paving and decorative items. We are the only company in the industry who offer a total solution for the Precast market, fulfilling all of your precasting needs. We hold substantial stocks with most products available for same day dispatch. Our 100,000 ft warehouse in Poynton, Cheshire, UK houses over half a million pounds (sterling) in stock and materials, ensuring the minimum lead time for your delivery.

Please visit this page for advice, articles and user guides>

Our sister company, Armcon, are the world’s leading volumetric concrete mixer specialists.


Add to Quote Request

Suitable for both precast and site concrete production.

In place, the unit gives up to 400 kg (900 lb) force, and provides a stable vertical surface with two 8mm (1/32 inch) fixing holes for attaching timber or metal shutters.

Any steel bed or plate can be speedily adapted for variable casting dimensions, without any drilling or welding damage.

Cost effective due to assured reuse.

A full range of other shapes can be manufactured to order.

Application Notes:

Supporting planks for producing flooring slabs narrower than the bed width.

MagnaBlocs can be used to eliminate the need for wooden wedges.

Suggested spacing – 1 metre apart.

Ideal for producing box-outs, stop ends and any partial filing.

Weight 10 kg

1 x Magnabloc


• 400Kg (900 lb) force per MagnaBloc
• Can be used with timber and steel form work/shuttering
• No welding required
• Easy and quick to move