Talk Composites - The Forum for Advanced Composites

Release issue with MDF Mould

http://www.talkcomposites.com/Topic2626.aspx

By Chompy - 8/15/2012 8:46:08 AM

Hi all,

I have just purchased my first kits from easy composites. Thanks guys for the training videos, they are very simple to understand.

In making my first part I have experienced a couple of issue and would like to understand where I went wrong.

1.  I used MDF to make my mould, I apply several coats of wax and PVA release agent but could not release the MDF part from the mould, what did I do wrong, did I need to spray the MDF part first?






2.  I had some issues with moulding my carbon part due to the tight spaces and complexity of the part, would I be better off using the vacum method for this part?














Many thanks,




Matt
By FLD - 12/30/2012 9:42:23 AM

It will be the parrallel sides that are causing you issues.  You need at least a degree to stand a chance of release.  I've just made a plug from MDF.  I primed it, flatted it back with 320 grit discs, 7 coats of easy lease followed by 4 of wax and I just checked a drip of gel and it comes off OK.  Make sure you buff it up well after each coat of release agent / wax.  Fingers crossed for you.