simple Hi-Tek coating

[dansedgli]

Probably my most productive week at work.

[Ausglock]

Knocked out 7000 125g Conicals today is 3 hrs.
Do a few more tomorrow...

Looks like Lockdown is good for you, Dan..

[dansedgli]

7000 is 3 hrs is pretty good. I wish i had that kind of output.

[Avenger442]

Your right Joe the yellow was bright yellow mixed and tan after bake. The orange was bright orange mixed and burnt orange baked. I liked the burnt orange color. Just not what I was looking for.

Thanks for trying. Maybe can get to work this time.

[Jatz357]

Here it is..
The Mk2 purple.
More Mauve... I like it.

They look very swish Trevor. Small colour ratio mix has made a huge difference. Sort of matches Pantone 251 C

[RydForLyf]

Damn you TruBlue!





More to come...

[Ausglock]

You might like Vyagrah Blue instead....

Little blue Pills are good for your barrel.......

[RydForLyf]

I’ve been away for several months and it looks like I have a good amount of reading to do to get up to speed with Hi-TEK state of the art.

[RydForLyf]

Because of my "Be like Trevor" campaign, I have left over oven parts that are Free to Good Home.

I have seen several posts from people wanting to incorporate a switch for their circulation fan. If you want mine, shoot me a PM. It's yours for the price of shipping. Also available is the light and a couple of cooling fans.





The switch has one NC contact for the oven light and one NO contact for the fan.

[Ausglock]

I still have the cooling fans, lights and fan switch in mine.

[RydForLyf]

I do too, but the oven I got was a double oven, convection on top and standard on bottom. I’ve cannibalized the lower oven before throwing it on the trash heap. Now I have some left over parts I can dispose of.

[HI-TEK]

You might like Vyagrah Blue instead....

Little blue Pills are good for your barrel.......

I dont know if you are tricking me or not. Your picture is actually showing a Blue coating.
Very pretty.....

[Ausglock]

No trickery or photoshop... it is the real deal...

[Burnt Fingers]

Calling Donnie!!

We need these new colors in the States!

[kevin c]

Less green from overbaking than TruBlu?

[Ausglock]

Less green from overbaking than TruBlu?

Don't know... I try not to overbake. defeats the purpose of PID control.

[Ausglock]

Just to satisfy the Doubting Thomases.
This is the Hydra Blue (can't call it Vyagrah Blue in case the pharma company decides to sue)
I did 4 trays.
2 of 135gn RN and 2 of 125gn Conicals in 9mm.
Each tray had 2.5 and 2.3 Kg respectively.

Coated with the standard 6mls pre tray of the 20gms to 100mls Acetone mix.
Baked at 195deg C for 7 1/2 minutes, 2 trays at once in my oven.
The photos show the bullets after sizing, under Led lights in my shed.

[kevin c]

If I try hard, I can almost convince myself that there's just a smidgeon of blue green there, but there's no doubt I'd call that blue.

I'm just starting to work with the TruBlu. What works for me with Black Cherry doesn't for TruBlu.

My hideously expensive convection oven with K probe confirmed 195°C air temps only gets me to 180° bullet core temp at 11 minutes, 30 seconds, and then I'd get failed wipe tests at two to three minutes after. For BC I had to get air temp to 210°, which would get core bullet temp to 180° at 6 minutes with a pass on wipe and smash at ten minutes. With the TB, at 210° air temp, everything goes green at the minimum bake time of two minutes post core temp hitting 180°, by which time bullet core temp has only hit 195°.

This was on trial baking tests, where I had a load of dummy bullets at the standard weight plus several bullets coated with the color being tested. I had a K probe inserted in a coated boolit as well. Once core temp rose to curing temp 180° (I eventually moved to 185° as a margin of safety), I pulled samples at timed intervals, starting two minutes out. This saved having to cool the dummy bullets to preheating temperature for each test, but it introduced a stall in the temperature rise in the oven (and, of course, the bullets) from the oven door being opened repeatedly.

I'm wondering if the size of my countertop convection oven is an issue. The elements are just 3-4" from the bullet tray, and a little testing with an IR gun shows surface temps on the bullets at 40-50°C higher than the core readings. I'm thinking of setting up some baffles to deflect the direct radiant heating from the quartz elements. There are rack positions above and below the one I use. Maybe a few pounds of uncoated boolits scattered on trays the would diffuse the radiant heating as well as act as a heat sink. Sure the bullets will reradiate heat energy, but I'm hoping it'll be much less intense than the energized elements. Just cost me a couple new racks. We shall see.

Any comments and suggestions welcome.

[Ausglock]

Kev. does your oven have elements top and bottom?
Our Benchtop ovens do and we use the middle rack (1 tray only)
They do 12 mins at 195Deg C Air temp. They are used for Kryptonite green. I haven't tried them with either of the blues.
We use 4 benchtop ovens at once. all are different brands. But I have re-wired them with capillary temp controllers.
They are NOT PID controlled.

[HI-TEK]

The elements are just 3-4" from the bullet tray, and a little testing with an IR gun shows surface temps on the bullets at 40-50°C higher than the core readings.
I'm thinking of setting up some baffles to deflect the direct radiant heating from the quartz elements. There are rack positions above and below the one I use. Maybe a few pounds of uncoated boolits scattered on trays the would diffuse the radiant heating as well as act as a heat sink. Sure the bullets will reradiate heat energy, but I'm hoping it'll be much less intense than the energized elements. Just cost me a couple new racks. We shall see.

Any comments and suggestions welcome.

Hi Kevin C
You have identified the problem as highlighted in red..
It is well advertised, that coating stops heat transfer. I bet, the coating on outside, is probably higher in temperature above 40-50C. That is why it goes green.

Radiant heat, being so close, is the problem.

The coated bullet, needs to only get to 180C, and stay there for another 2 minutes.
By the time you finish your baking, I am guessing that the final bullet temperature is well above 200C.

Using a tightly weaved wire mesh between element and product should help greatly as mesh would heat up and spread heat more evenly.

Quick question, is your oven fan forced?