Tasty LED discussion thread

[sanjuan]

Rahz, I've spent countless hours flattening/trying to flatten heatsinkusa parts. The last effort was a 4x24" vintage commercial Craftsman belt sander with a bunch of grits I bought from Zoro.com. Problem is, a grit heavy enough to break down the high shoulders drags debris through the low center, gouging the area where the COBs go.

Screw it, I've finally given up and just add a bit more thermal compound to fill the cupping. Well, I don't actually add any, I just leave the COB well buttered.

A machine shop with a surface grinder and a soft wheel for aluminum would make more sense for production than fly cutting on a mill, I guess--but I've been away from machining a long time.

 

[Pig4buzz]

@Rahz I have a current space of 3x4x6.5 I am using 315 lec in this space I plan on increasing my room size and want to use COB/CHM combo. What's your feelings. The increase would be to 3x8x6.5

 

[Rahz]

Hi Pig4buzz,

If you're wanting to get an even mix in a 3x8 I would consider using T2s, maybe 3 of them with a couple CMH alternating in between. That would put the PPFD in the upper 700s. That's what I've used in the past with good results.

 

[CallmeTex]

@Rahz coulfd you add your website to your signature, so lazy mafks like me can click through?

 

[Rahz]

Rahz, I've spent countless hours flattening/trying to flatten heatsinkusa parts. The last effort was a 4x24" vintage commercial Craftsman belt sander with a bunch of grits I bought from Zoro.com. Problem is, a grit heavy enough to break down the high shoulders drags debris through the low center, gouging the area where the COBs go.

Screw it, I've finally given up and just add a bit more thermal compound to fill the cupping. Well, I don't actually add any, I just leave the COB well buttered.

A machine shop with a surface grinder and a soft wheel for aluminum would make more sense for production than fly cutting on a mill, I guess--but I've been away from machining a long time.

Hi Sanjuan, thanks for the consideration. That's what I've found. To prevent removing additional material from the lapping, the lap needs to be done with around 200 grit which ends up being a lot of work for these large pieces. I am not familiar with surface grinders so thanks for bringing that up. The magnetic chuck might be an issue but I'll do some more research on them. I'm still looking for a drum sander to play with. My concern is that being made for woodwork the mat may not grip the sink in the same way it will with wood.

 

[Rahz]

@Rahz coulfd you add your website to your signature, so lazy mafks like me can click through?

Done.

 

[sanjuan]

Parts are sometimes held in a vise for surface grinding, especially with custom aluminum jaws.

 

[Rahz]

Tasty grow room pic, courtesy of Hydro_Jack, day 21.

 

[The Dawg]

Why is Hydro_Jack In Dirt ??

 

[Rahz]

He used to be in hydro but switched to dirt. Dirt_Jack just doesn't sound the same

He has a thread at AFN in the Tasty forum, hopefully will log the grow til the end.

 

[The Dawg]

OIC Said The Blind Man. Here's A Thought For A New Name Brown Dirt Cowboy

 

[JorgeGonzales]

OIC Said The Blind Man. Here's A Thought For A New Name Brown Dirt Cowboy

You managed to get that song stuck in my head without a youtube link

 

[The Dawg]

Here's The YouTube Video For Those That Don't Know The Song

 

[sixstring2112]

He used to be in hydro but switched to dirt. Dirt_Jack just doesn't sound the same

He has a thread at AFN in the Tasty forum, hopefully will log the grow til the end.

I wanna see this in a couple weeks, whats afn? Pm me if you dont want to say here.those look like some trees

 

[The Dawg]

AFN Stands For Armed Forces Network Or It Could Stand For Auto Flowering .Network

 

[Rahz]

Yep, autoflower.net. There are 3 other Tasty logs going on there now but nothing like Hydro_Jack's. I'm curious too since most pics have been scrogs or scrog-like. Lots of space between rows so it will be interesting to see how it fills out.

 

[Airwalker16]

Tasty grow room pic, courtesy of Hydro_Jack, day 21.

View attachment 3762191

Are these all different amperages? Or did he stick with one? It's crazy to see that he's bought multiples of every model you offer. T-1's, 2's, 3's, AND 4's!

 

[Rahz]

They're all 2100 series lamps. I think he intended to use some of the smaller lamps in a different area then switched to one large room. The T3s were on clearance and he snagged them all.

BTW, clearance prices have dropped again for the few lamps left in that category. The T3 and T4 are well under $2 per watt at 1.75 amps.

 

[Airwalker16]

They're all 2100 series lamps. I think he intended to use some of the smaller lamps in a different area then switched to one large room. The T3s were on clearance and he snagged them all.

BTW, clearance prices have dropped again for the few lamps left in that category. The T3 and T4 are well under $2 per watt at 1.75 amps.

Are these all old stock BEFORE dimmer?

 

[Rahz]

Before the dimmer knob. They do have a dimmer switch, 60%-100% brightness.