High temp resistand 3d printing

[Mythical Knights]

I'm looking for the best option for printing fixtures for an in-line reflow oven that won't melt or deform up to 300c. I would prefer an esd plastic but it doesn't have to be. 

 

Any suggestions? 

[Skynetbeta]

I would suggest using a 3D print to create a silicone mold then casting your fixtures out of a temperature resistant epoxy.    ex  https://www.smooth-on.com/products/epoxacast-670/

 

[karsnoordhuis]

from what i know PEEK is one of the best materials for this but it only goes up to 250c and needs one hell of a setup to print. Ive had the luck of playing with some industrial printers that could do it but you need a lot of heat whilst printing it. the thermal resistant epoxy mentioned by skynetbeta is actually quite a neat solution