Hi-tek coating failed - opinions please

[marvelshooter]

Do you have the PID sensor in a bullet like this so you know the bullet temp?

10 min "after reaching 400 F" is too long IF you mean the actual bullet temp. I clock two minutes after bullets have hit 180 °C (360 F) and my PID overshoots to 370 F in those two minutes. Nothing wipes off with acetone when a bullet is rubbed for a full minute.

I do not have the sensor in a boolit. I was placing the sensor in with them in a cold oven making sure it was touching a few and starting the 10 minutes after reaching 400 f. I now know that is too long. Now I preheat the oven with the sensor just sitting on the rack and put the boolits in for 10 minutes.

[Avenger442]

Using a bullet with sensor inside is another option for getting that color you want. It was easy for me. I cast a lot of hollow point bullets. So I just picked a couple and put the sensor in the point. Attached with aluminum tape. One is coated and one not. Did this to show the difference in heat between the two. Once you coat it actually takes some more time to get to temp according to my sensors.

Blue Before Bake.jpg

Blue After Bake.jpg

[fredj338]

I cant imagine anyone trying to coat in an oven not preheated to 400. Seems like a giant guess otherwise.

[marvelshooter]

I cant imagine anyone trying to coat in an oven not preheated to 400. Seems like a giant guess otherwise.

I did it not knowing any better. My only excuse is it's how I baked electrostatic powder coated boolits.