Downloads (2)

Safety Datasheet (SDS)152 KB
Technical Datasheet (TDS)52 KB

Specification

Weight and Dimensions
Length250mm
Width250mm
Thickness50mm
Max Service Temp75°C
Compatible With
Compatible WithEpoxyYes
Compatible WithPolyesterYes
Compatible WithVinylesterYes
Compatible WithPolyurethaneYes
Compatible WithRTV SiliconeYes
Mechanical Properties
Chemistry / MaterialPolyurethane
Product Data
ColourBrown
Density600g/cm³
Compressive Strength17MPa
General Properties
Gross Weight1.813kg

Shipping Information

This product listed to by in a range of sizes. One or more larger sizes are classed as 'oversize' for delivery to some international destinations which means that delivery might not be available to some countries or when combined with certain types of product (dangerous goods for example).

When checking the delivery cost of your order, if you receive an 'oversize' warning then you may need to select a smaller size of this product in order to continue. Alternatively, please contact us to discuss.

PU600 High Density Polyurethane Model Board

PU600 is a high density 600kg/m³ polyurethane (PU) tooling board/model board suitable for manual or CNC machining to create highly accurate and detailed models, patterns or moulds.

Available to buy online in 50mm (2") and 100mm (4") thicknesses in a range of block sizes from 250 x 250mm up to 1500 x 500mm.


PRODUCT VERSIONS

Sheet Size
Thickness

AVAILABILITY:More than 10 availablefor immediate shipping


PRICE
£22.00inc. VAT
More than 10 availablefor immediate shipping
QTY
BLOCKS
BLOCKS
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Polyurethane model board in a High density of 600kg/m³. This rigid material is perfect for making patterns, models, and even moulds for short production runs. At this density it is tough to hand carve but can be accurately machined using manual or CNC machine tools. It also offers more durability and better surface finishing over our lower density model board.

Typical Uses

  • Creating master models/patterns/bucks for forming composite moulds.
  • Forming a mould tool for prototyping short runs of composite parts.
  • Building Landscapes/Features in architectural and scenario models.

Advantages

  • Excellent machining Characteristics
  • High dimensional stability
  • High temperature and chemical resistance
  • Good compressive strength
  • Paints/seals easily

How to Buy

This polyurethane tooling board is available in 2 thicknesses; 50mm (2") and 100mm (4") and a range of sizes up to 500mm x 1500mm (19" x 59"), please select the thickness and block size you require from the drop-down menu at the top of the page.

Further Information

How to Use

Machine shape the material using standard manual or CNC equipment, once the desired form has been created, the pattern can then be prepared, if required, for mould release.

Release Preparation

There are 2 main options available for achieving a good release from this PU modelling board/ polyurethane tooling block depending upon the level of finish required. First the pattern needs to be sanded to at least 600grit, it is best to do this dry, as wet sanding will lead to water absorption. For very high dimensional accuracy the board can be treated with multiple applications of the standard Easylease™ release system, this method does not build a thickness onto the board but cannot offer the highest gloss finish, for best results sand the board to at least 1200grit beforehand. Alternatively the board can be finished to a high gloss with Epoxy Pattern-Coat, which can be applied by standard spray equipment, or if this is unavailable it can be brushed, sanded flat and polished. Pattern-Coat will accept all forms of mould release agent.

Polyurethane model board in a High density of 600kg/m³. This rigid material is perfect for making patterns, models, and even moulds for short production runs. At this density it is tough to hand carve but can be accurately machined using manual or CNC machine tools. It also offers more durability and better surface finishing over our lower density model board.

Typical Uses

  • Creating master models/patterns/bucks for forming composite moulds.
  • Forming a mould tool for prototyping short runs of composite parts.
  • Building Landscapes/Features in architectural and scenario models.

Advantages

  • Excellent machining Characteristics
  • High dimensional stability
  • High temperature and chemical resistance
  • Good compressive strength
  • Paints/seals easily

How to Buy

This polyurethane tooling board is available in 2 thicknesses; 50mm (2") and 100mm (4") and a range of sizes up to 500mm x 1500mm (19" x 59"), please select the thickness and block size you require from the drop-down menu at the top of the page.

Further Information

How to Use

Machine shape the material using standard manual or CNC equipment, once the desired form has been created, the pattern can then be prepared, if required, for mould release.

Release Preparation

There are 2 main options available for achieving a good release from this PU modelling board/ polyurethane tooling block depending upon the level of finish required. First the pattern needs to be sanded to at least 600grit, it is best to do this dry, as wet sanding will lead to water absorption. For very high dimensional accuracy the board can be treated with multiple applications of the standard Easylease™ release system, this method does not build a thickness onto the board but cannot offer the highest gloss finish, for best results sand the board to at least 1200grit beforehand. Alternatively the board can be finished to a high gloss with Epoxy Pattern-Coat, which can be applied by standard spray equipment, or if this is unavailable it can be brushed, sanded flat and polished. Pattern-Coat will accept all forms of mould release agent.

Downloads (2)

Safety Datasheet (SDS)152 KB
Technical Datasheet (TDS)52 KB

Specification

Weight and Dimensions
Length250mm
Width250mm
Thickness50mm
Max Service Temp75°C
Compatible With
Compatible WithEpoxyYes
Compatible WithPolyesterYes
Compatible WithVinylesterYes
Compatible WithPolyurethaneYes
Compatible WithRTV SiliconeYes
Mechanical Properties
Chemistry / MaterialPolyurethane
Product Data
ColourBrown
Density600g/cm³
Compressive Strength17MPa
General Properties
Gross Weight1.813kg
Can’t find the answer you’re looking for?Ask our technical team a question.

Yes you can bond the sheets together. We recommend our Fast Cast Polyurethane Casting Resin for bonding this pu600 density board. The resin can be spread over the surface of the block and will cure very quickly and make a good strong bond that will machine in a similar way to the board itself.

It's possible that you might be able to use petroleum grease as a basic release agent but generally this wouldn't be our recommended approach. The problem with petroleum grease is that it's so soft and 'mobile' that it can be quite easy for it to accidentally thin out in places to the point where it wouldn't be effective. If you apply it thicker, which would generally be better from a release perspective, then you're likely to find that your castings have quite visible 'smears' and other unwanted surface detail caused by thicker areas of the grease.

A more permanent and reliable long-term option would be to use a board sealer, such as S120, and then several coats of Easy-Lease chemical release agent.

Although the board itself is waterproof and unlikely to be damaged by water and the environment, the open structure on the surface means it is likely to pick up dirt and debris quickly. As such it is recommended to seal the surface with a paint or protective coating to improve and prolong the surface appearance of the board.

No the board will not swell as it has a closed cell structure and thus very limited moisture absorption would occur.

In terms of sealing the PU600 board so that RTV silicone rubber will release from it, this might not actually be necessary because the density of the PU600 board is sufficient to mean it has a smooth, closed surface structure. Since RTV silicone doesn't stick (other than slightly grip) to most materials, including PU board, you would be able to peel the RTV silicone off the PU board even if you did no surface prep at all.

If you would like to improve the surface of your pattern/master - for example to achieve a smooth high gloss finish - then you could use either our S120 Board Sealer or our Pattern Coat High Gloss products. The board sealer would be better if you already have a very fine finish on your pattern/master whereas the Pattern Coat product is higher build and would be more suitable if the machining/finish on the pattern/master needed more work.

In either case, you would not need to use a release agent afterwards, silicone will release itself from both of these material surfaces.

Yes our S120 is suitable for use on Polyurethane as well as epoxy tooling/modelling boards.

No, this PU Model board is not suitable for lost foam casting methods that require you to dissolve the foam. Acetone will not dissolve PU foams or model boards. Also this is a very high density model board rather than a light foam that is normally used for these kind of methods on practicality grounds. Typically, polystyrene is used for such methods as it can be easily dissolved out of the finished tube.

The linear thermal expansion coefficient (tested to DIN 53 752 K-1) is 55 x 10-6.

Yes, you can do this, exactly as you describe. Although you can’t really tell it’s happening, Easy-Lease does build-up on the surface of a mould (or pattern) with its solids content. This solids content is what will seal the PU600 and allow you to release from it but to get a good, glossy finish and reliable release you will need to apply a reasonable number of applications. I would suggest that in the region of 10 applications of Easy-Lease, at 10min intervals, will give you a nice, well-sealed, shiny mould surface from which you can reliably release.

 

The only extra piece of advice I should give you is that you should not use PU600 as a mould for prepregs; when polyurethane gets hot it will inhibit the cure of prepregs significantly. PU600 as a mould, should therefore, not be used for prepregs; epoxy tooling block is required in this situation.

The PU600 model board is polyurethane based and this will inhibit the cure of any epoxy based pre-pregs thus making it unsuitable for most autoclave use. The PU580 has a heat distortion temperature of 85°C which reduces its use at higher temperatures. As a direct moulding material (rather than as a pattern from which a high temperature tool would be made) you would need to use either epoxy tooling board or ceramic tooling board.

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Shipping Information

This product listed to by in a range of sizes. One or more larger sizes are classed as 'oversize' for delivery to some international destinations which means that delivery might not be available to some countries or when combined with certain types of product (dangerous goods for example).

When checking the delivery cost of your order, if you receive an 'oversize' warning then you may need to select a smaller size of this product in order to continue. Alternatively, please contact us to discuss.

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