Hi all, 

I am going to attempt my first split mold and am hoping to reproduce the small hatch spoiler from my car. Because of the severe angle that it takes at the edge I know a spilt mold will be necessary I was just hoping for some advice if my split point is going to work.

I am hoping to split the mold along this red line I've added to my picture. I think it will work but it is curved and I think I've only seen spilt molds where people keep the splits very straight. So will it be ok to do this?


Some other pictures from other angles if they will be helpful:





Thanks for your help!

Yiu can split it there all around yes, i would go that way allso
The curve doesnt matter.   But u need to make sure to split it exactly on the widest point.  If not...   youre mould will have in in a vise gripp when u want to release it And will be locked in.

 

Jeffrey raises a good point that where ever you split it, ensure that each mould half is not mechanically locked into place. That curved edge looks to be a good place and if careful, the flash line can be on the corner and easily removed and hidden when cleaning up the part. 

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

Great, thank you. I might put some preliminary flange material on and repost just to make sure everything still looks good!

So I preliminarily put some aluminum flashing up to start planning out the mold. Obviously Ill back it with something else to give it a bit more structure but I'm looking for feedback on the angle/ placement of the split at this point. As you can see I just hot glued the flashing to the edge of the spoiler with the plan to make the first half of the mold the top of the spoiler and then make the bottom the other half. Is this looking reasonable?

It will work fine as a vertical like that.  Although if you can angle it, it may make laying up the mould a bit easier due to the practicalities. 

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant