you def could but would think it would be easier just buying one bit for each would take away more of a chance of breaking bit or messing something up
Heatsinks for DIY LED lamps
- Thread starter SupraSPL
- Start date
Airwalker16
Well-Known Member
So you have to drill a hole for sure. You can't just screw right into it?
Fastslappy
Well-Known Member
there's another screw that has a no thread nub @ the end & not as deep cutting threads
I just set a 3590 holder with them into a test of how these drill/tap screws to see how they do setting a holder![IMG_20160123_140419[1].jpg](https://www.rollitup.org/data/attachments/2691/2691543-adacba7fab7bc52921eb4c2591493c86.jpg?hash=ray6f6t7xS "IMG_20160123_140419[1].jpg")
![IMG_20160123_140457[1].jpg](https://www.rollitup.org/data/attachments/2691/2691545-b3d17f3ee8f25ee0be5fee46c8c5ed2d.jpg?hash=s9F_PujyXu "IMG_20160123_140457[1].jpg")
into a AL bar 1" 2" aprox size !!!
I just set a 3590 holder with them into a test of how these drill/tap screws to see how they do setting a holder
into a AL bar 1" 2" aprox size !!!
Airwalker16
Well-Known Member
So you think it's best to use a drill bit, then go through it with the little hand "T" holder and turn the threads in by hand?
http://www.amazon.com/gp/aw/d/B000C...ap+and+die&dpPl=1&dpID=31ENZ4ct3VL&ref=plSrch
http://www.amazon.com/gp/aw/d/B0000...s=hand+tap&dpPl=1&dpID=31NW0Q7RRNL&ref=plSrch
http://www.amazon.com/gp/aw/d/B000C...ap+and+die&dpPl=1&dpID=31ENZ4ct3VL&ref=plSrch
http://www.amazon.com/gp/aw/d/B0000...s=hand+tap&dpPl=1&dpID=31NW0Q7RRNL&ref=plSrch
Fastslappy
Well-Known Member
they pass with Flying Colors ! !
very easy to fine tune the torque applied & go in by hand
very easy to fine tune the torque applied & go in by hand
Fastslappy
Well-Known Member
Airwalker16
Well-Known Member
What screw was it? Can you find a link to where to buy them?
And are you saying that you just screwed it right into the aluminum without even drilling a pilot hole?
Airwalker16
Well-Known Member
Fastslappy
Well-Known Member
( used a 3 /32 " drill bit as the final drill But started with a pilot hole even smaller
This bar that it's attached to is not oonly a test
But will be my template & drill guide as I assemble the array
lay that bar on top on sink then hand drill
straight down drilling is not a issue then when using a jig like this & it's a template as well
This bar that it's attached to is not oonly a test
But will be my template & drill guide as I assemble the array
lay that bar on top on sink then hand drill
straight down drilling is not a issue then when using a jig like this & it's a template as well
Airwalker16
Well-Known Member
OH I can see on the second pic now that I zoomed in that it's the bottom where the drill went through. So what size screw?
Fastslappy
Well-Known Member
no, this is a counter sunk screw
Fastslappy
Well-Known Member
same size as ideal holder stock screw
Airwalker16
Well-Known Member
I'm still a little lost I'm sorry haha. So with that alum bar, you drilled a pilot hole with like a 1/16" then a 3/32", then you just screwed the screw in? No tapping. But that's only very thin alum not like a 1/4" base plate.
Airwalker16
Well-Known Member
Okay which is... m3 or #4-40?
thats what I'm getting for my screws
Airwalker16
Well-Known Member
Wouldn't pan heads hold it better?
Fastslappy
Well-Known Member
yer link is NOT a pan head it countersunk
Fastslappy
Well-Known Member
screws ![IMG_20160123_143437[1].jpg](https://www.rollitup.org/data/attachments/2691/2691555-1414a7a2ccbbd669fb2325a9cae34ef8.jpg?hash=FBSnosy71m "IMG_20160123_143437[1].jpg")
![IMG_20160123_143506[1].jpg](https://www.rollitup.org/data/attachments/2691/2691557-355364eecac382850d650fc47b9bce40.jpg?hash=NVNk7srDgo "IMG_20160123_143506[1].jpg")
![IMG_20160123_143455[1].jpg](https://www.rollitup.org/data/attachments/2691/2691559-ee1aec0894d0c3055815340793cf60fb.jpg?hash=7hrsCJTQww "IMG_20160123_143455[1].jpg")
Airwalker16
Well-Known Member
Airwalker16
Well-Known Member
Okay so those are these screws at 8mm length then if I can tell correctly?
http://m.ebay.com/itm/100PCS-M3-M4-...ntal-Tail-Bolt-Black-/272013654380?nav=SEARCH
