Spark plug cover mould

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Spark plug cover mould

Author	Message
jamiepm	jamiepm posted 11 Years Ago HOT Topic Details
Group: Forum Members Posts: 2, Visits: 21	Hi all, So this is my first mould, it's not overly complex, however attempt number one was a failure. The products worked brilliantly, and the detail was really good. Sadly I had to break the mould as there was no way of getting a grip on the pattern to release it Below are pictures of the part, it sadly I isn't flat so I built flanges around the edges last time. The part is made from aluminium as well. Any tips on how to mould this would be great.
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carbonfibreworks	carbonfibreworks posted 11 Years Ago HOT Post Details
Group: Forum Members Posts: 292, Visits: 4.5K	Hi Secure it to a piece of sign board/Corex and build up around the sides with fillet wax. Regards Chris carbon fibre works ltd Edited 11 Years Ago by carbonfibreworks
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f1rob	f1rob posted 11 Years Ago HOT Post Details
Group: Forum Members Posts: 237, Visits: 4.8K	Two ideas for next time Do as you did before but really beef up the side flanges and when finished remove all the loose flanges then use gravity/inerta to get the part out Hard bash on one end of the flange while holding the other end should see your pattern flying out Lots of shock isn't good for your gelcoat but will be ok for a one off home brew Or drill 2 6/8mm holes through the top of your pattern (long as you don't mind destroying it) countersink them so when you bolt a countersunk bolt in its below the surface Fill and polish on top of the bolt heads and you now have 2 studs coming out of the back of your pattern to strip out with
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jamiepm	jamiepm posted 11 Years Ago HOT Post Details
Group: Forum Members Posts: 2, Visits: 21	Thanks for the replys Really like the countersunk method, will do that next time I created huge flanges last time, so I'm thinking of scaling them back this time. Forgot to mention I'm using the way composites epoxy mould kit. Cheers, Jamie
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Hanaldo	Hanaldo posted 11 Years Ago HOT Post Details
Group: Forum Members Posts: 2.5K, Visits: 28K	Before you try drilling holes as Rob suggested, why not try to utilise the existing holes? You need to block them anyway, so you might as well stick a bolt in there and then cover it up with wax or plasticine. Also, you said you made the flanges too large? What resin process will you be using to make the part? If you are doing infusion and the flanges are in the glimpses I can see of your mould, then those flanges aren't big enough. If you're doing wet lay then it will be fine, but for infusion I wouldn't have a flange any narrower than 10cm.
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