test mold in aluminum

[gcz]

would any of the pros plz take a look at my 'hello world' injection mold and make a critique?
http://cnc-g-spot.com/testmold/TestMold.htm
i have a 2 oz pneumatic machine for this and will test it soon as i replace one of the heaters that blew up and welded itself inside...ugh..

[ckirchen]

Are you going add dowel pins to make the holes in the parts?

Chris Kirchen

[gcz]

there's about 35 pins , yeah - a couple in the middle of the squares are just alignment, not touching the plastic part
i will knock some of the sharp edges off, too, where appropriate - just burnish a bit to round

[andy55]

Originally Posted by gcz would any of the pros plz take a look at my 'hello world' injection mold and make a critique? http://cnc-g-spot.com/testmold/TestMold.htm i have a 2 oz pneumatic machine for this and will test it soon as i replace one of the heaters that blew up and welded itself inside...ugh..

could you give some more information on where to find hobby-size injection moulding machines and what they cost etc ?
what are the considerations/limitations when making a mould ?
thanks !

[gcz]

http://www.iasco-tesco.com
this is the best i know for ready to go desktop machines.
i'm sure there are others somewhere, though.

[svenakela]

Been using equipment from this company, works great. Some of the products could be home made I think.
http://www.scanrex.se/e_index.htm

--Sven