Clamping molds

[walleye warrior]

What is the opinion on the beat way to clamp or hold mutiple molds while injecting. I have used the screws that came with the molds and that is really inefficient. Ive used clamps and i still get plastic blowing out the sides. I have thought of modifying a vise.

I am mostly shooting 4 molds at a time

[Apdriver]

I shoot multiple molds and what I do is turn my molds so the injection ports are down on my bench. Then take two 6" C clamps and clamp them together. If my 6" clamp is too small, I grab the 8" ones. Once clamped, turn them over. Now all your injection ports are in plane at the top and easily accessed with your injector. The C clamps will leave a small mark but nothing an orbital sander won't cure if you decide to sell one. I've bought a bunch of used molds with orbital sander marks. It's just what guys do.

[Roger Linnell]

1 hour ago, Apdriver said:

I shoot multiple molds and what I do is turn my molds so the injection ports are down on my bench. Then take two 6" C clamps and clamp them together. If my 6" clamp is too small, I grab the 8" ones. Once clamped, turn them over. Now all your injection ports are in plane at the top and easily accessed with your injector. The C clamps will leave a small mark but nothing an orbital sander won't cure if you decide to sell one. I've bought a bunch of used molds with orbital sander marks. It's just what guys do.

ditto

[Cub48]

C Clamps marred my molds i use a carpenters vise it has two 1/2 rods on the bottom of the vise u can stack 4 -5 molds in it at a time  i have tried all the recommend clamp and this the best i found. 

[smallmouthaholic]

I use 2 -6x4" woodworking vises attached to either side of the outside of my exhaust booth

[CNC Molds N Stuff]

I use Harbor Fright bar clamps.  Cheap and easy.  Can setup multiple sets of molds at once because the short bar clamps are so cheap.  I have 20 or so them hamging up at the pouring bench.