R.T.M injection molded fiberglass

[routalot]

I feel I ought to point out that the images Splint has posted show matched moulds for the component and it is made using polyester resin.
Pyroracing;your 40 inch part may be large in your context but there are people successfully making much larger items and your project should be attainable.RTM is the abbreviation for Resin Transfer Moulding.Your mould may be made of any material that will resist a vacuum and which can be finished to the standard you require.

[pyroracing85]

Originally Posted by routalot I feel I ought to point out that the images Splint has posted show matched moulds for the component and it is made using polyester resin. Pyroracing;your 40 inch part may be large in your context but there are people successfully making much larger items and your project should be attainable.RTM is the abbreviation for Resin Transfer Moulding.Your mould may be made of any material that will resist a vacuum and which can be finished to the standard you require.

yes? What do I need to start?

[ger21]

You either need to mill a mold, or make a plug that you can pull a mold from.

[pyroracing85]

Originally Posted by ger21 You either need to mill a mold, or make a plug that you can pull a mold from.

How would I mill a mold that is 40" wide? I have access to a machine that can do like 12". Is there a way that I could weld them together or something?

[ger21]

Originally Posted by pyroracing85 How would I mill a mold that is 40" wide?

Pay somebody a lot of money. What kind of part are you making? You'd probably be better off making a plug and pulling a mold from it.

[routalot]

For the puposes of this forum,you need a CAD model of the parts you are trying to produce.Taking into account such things as split lines and any flanges and fixings you may need to hold the mould together you are in a position to proceed.For a less technically demanding solution,you could start with a slab of foam and a few cans of polyester filler and take a GRP mould from which you could make GRP parts.You could even hand lay carbon/epoxy parts in it.If you wanted to deal with the additional challenge of RTM it would be feasible to produce parts from such a mould if you have a vacuum source available.Google is your best bet and there is lots to learn.

[pyroracing85]

Originally Posted by routalot For the puposes of this forum,you need a CAD model of the parts you are trying to produce.Taking into account such things as split lines and any flanges and fixings you may need to hold the mould together you are in a position to proceed.For a less technically demanding solution,you could start with a slab of foam and a few cans of polyester filler and take a GRP mould from which you could make GRP parts.You could even hand lay carbon/epoxy parts in it.If you wanted to deal with the additional challenge of RTM it would be feasible to produce parts from such a mould if you have a vacuum source available.Google is your best bet and there is lots to learn.

give me a few weeks and i'll get a cad drawing together and i'll show you guys what exactly i'm looking for