BobFuller Posted May 18, 2012 Report Share Posted May 18, 2012 I painted up a few thousand jigs and spoons spinner blades ect.. I've been baking them for the recommended time and temp. Here is my problem. I went out fishing today, and all my football jig heads are chipping up.., and a few of my spinner blades have done the same... The blades i can understand seeing they are painted on a plated surface, but the heads should be rock solid and I'm getting a bad taste in my mouth... I've taken others outside and smashed them off the road and they dent in, and the paint just dents with the lead, never chipping. Labels say 350* for 15 min. Any longer than 15 min if I'm using like a blaze orange paint, it will turn real dark when it flows out, but never changes back to the original color.... The spinner blades have done the same when baking, although seems to do it much faster than the lead or thicker spoon. If I bake then blades any longer than 10 min at 350 they re-flow out, then never come back to they're original cold temp color... Quote Link to comment Share on other sites More sharing options...
dlaery Posted May 18, 2012 Report Share Posted May 18, 2012 My experience with a household oven baking powder is, when you open the door the temp drops from 350 down to 200 and takes 7 minuets to get back to 350, then is when your 10 minuets start. I bake just about everything for 20 minuets. Also the thermostat on and oven varies a lot, when heating it may go to 350 and shut off, but the temp keeps rising because the element is still hot. When the temp is coming down, it my get as low as 275 before the thermostat kicks back on. I was having problems with the paint chipping, so I installed an electronic heat control switch to keep the temp at 350 constant or whatever I set it at. On the bright colors like blaze orange I usually bake them at 375 for 20 minuets. I am not totally happy with the color after baking, but I thought is was because I spray electrostatic and it doesn't put on as thick of coat as dipping, and these colors look better if they have a white base coat. just some thoughts. Quote Link to comment Share on other sites More sharing options...
BobFuller Posted May 19, 2012 Author Report Share Posted May 19, 2012 My experience with a household oven baking powder is, when you open the door the temp drops from 350 down to 200 and takes 7 minuets to get back to 350, then is when your 10 minuets start. I bake just about everything for 20 minuets. Also the thermostat on and oven varies a lot, when heating it may go to 350 and shut off, but the temp keeps rising because the element is still hot. When the temp is coming down, it my get as low as 275 before the thermostat kicks back on. I was having problems with the paint chipping, so I installed an electronic heat control switch to keep the temp at 350 constant or whatever I set it at. On the bright colors like blaze orange I usually bake them at 375 for 20 minuets. I am not totally happy with the color after baking, but I thought is was because I spray electrostatic and it doesn't put on as thick of coat as dipping, and these colors look better if they have a white base coat. just some thoughts. whats electrostatic spraying? I spray using a heat gun ect.. I'll try monkeying with different temps and see what happens Quote Link to comment Share on other sites More sharing options...
dlaery Posted May 19, 2012 Report Share Posted May 19, 2012 electrostatic is a special gun with an electrical charge and then hook a ground wire to the rack with the jigs and then spray the powder from the gun. the electrical charge creates a negative positive causing the paint to attract to the jigs through static electricity, kind of like rubbing a balloon on your head and sticking the balloon to the ceiling. Quote Link to comment Share on other sites More sharing options...
FishAction Posted May 20, 2012 Report Share Posted May 20, 2012 Toaster oven? If so, get a good oven thermometer because oven heat don't always match the setting. One oven I have averages about 50 degrees higher than the dial setting and it caused problems before using a good oven thermometer. Heat time for powder paint is when the item reaches peak temp for the specified time, then open the oven for a quick cool down. Epoxy and hybrid/epoxy powder paints tend to chip more and degrade quickly in external use. Stick with polyester or polyester TGIC powder paints for durable, external use items. Lot's of information on the web to help you understand powder paint specifications and types. I've found paint temp and times are critical for certain colors. Too high temp tends to be the problem for me causing some colors to be too dark. For best results, follow manufacturer's temp and cure time. Try lowering the temp or decrease the time for your current orange darkening problem. Plus for the chipping problem, it may be the football heads were not fully cured if you're not using epoxy powder paint. Charlie Quote Link to comment Share on other sites More sharing options...
ING Posted May 20, 2012 Report Share Posted May 20, 2012 ..... I installed an electronic heat control switch to keep the temp at 350 constant or whatever I set it at. .... What electronic heat control switch do you use? Is it something ready to use or homemade gadget? Thanks Quote Link to comment Share on other sites More sharing options...
dlaery Posted May 20, 2012 Report Share Posted May 20, 2012 It is called a PID controller. this is where I got mine http://www.auberins.com/ Quote Link to comment Share on other sites More sharing options...
smalljaw Posted May 21, 2012 Report Share Posted May 21, 2012 You need a thermometer that hangs in an oven or you need one of those infrared thermometers because you are way too hot. I've been at this awhile and the only time I've had color changes in the paint was if 2 different color flowed together from being too thick or when I tried curing at 420 degrees for 12 minutes. I cure my jigs and spinnerbaits at 350 degrees according to the thermometer which was just calibrated by the way, for 25 minutes, 5 minutes to get back the temp I lost when I opened the door. Metallic collors and just about every other color I've done has come out the way it went in. Dleary is going to have a different color as his paint isn't melted already when he begins his cure stage as he does it electrostaticly so it goes on the color of the unmelted powder but when you use the heat gun the power applied melts and should stay that color unless it is too hot and it can happen if you use a toster oven. Another thing I found was yes, you can throw a powder painted jig on a concrete floor and it will hold up but take it and drag it across jagged rocks a few dozen times and see if it is any better. My point is powder is tough but it isn't indestructible, mine will begin to chip even when it is coated in epoxy, it might not do it on the first outing but if I have a jig that last multiple outings you can bet there is a spot or two as you can even see the epoxy has been scrapped off by rocks. Check your temp again and see if that may be your problem. Quote Link to comment Share on other sites More sharing options...
mark poulson Posted May 22, 2012 Report Share Posted May 22, 2012 You can "save" the discolored jigs, if they are just for your own use, by coating them with a colored nail polish. It holds up pretty well, and can be touched up easily. Quote Link to comment Share on other sites More sharing options...
RAWJigs Posted May 24, 2012 Report Share Posted May 24, 2012 I had that problem also, and when one day I made a batch of different colors, I set the temp and put them in while the heat up process was going on ... never had that problem again ... Quote Link to comment Share on other sites More sharing options...
