#garfield Logs

Jul 15 2012

16:31 katsmeow-afk and overall, the solution is 1/2 the size
16:32 katsmeow-afk i am having trouble wrapping my head around it, it's too simple
16:36 katsmeow-afk a 2" x 2" pcb with smd parts on it with a 2" fan blowing on it, switching 20amps , or 8 of them set up like fins in front of the fan, in a 2x2x3 inch box, switching 150amps
16:37 katsmeow-afk a 120vac 150amp ups so efficicent it has NO heatsinks in it?!
16:37 katsmeow-afk i can't wrap my head around it, can't happen
17:27 katsmeow-afk Reel of 2500+ Zetex FMMT2222ATA Transistor NPN 40V 600MA SOT23-3
17:27 katsmeow-afk Location: Virginia,United States Store: Storage Chic SalesSeller User Id: storagechicFeedback: 4,818 | 99.7%Returns: Accepted within 14 days Buy It Now
17:27 katsmeow-afk or Best Offer $75.00
17:27 katsmeow-afk +$5.45 shipping Time left:
17:28 katsmeow-afk there's your 2222 transistors, 3 cents each
17:28 katsmeow-afk offer $25
20:22 katsmeow-afk ok, if anyone patents this, i want a piece of it: the egg wash one typically puts on pastries also seals lumber and makes it much easier to write on
20:22 katsmeow-afk baking is not required, just let it dry
20:48 katsmeow-afk impromptu bugspray : windex ; apparently bugs do not appreciate the ammonia in it
22:56 katsmeow-afk Tom
22:57 Tom_itx and what's sticking out the bottom?
22:58 katsmeow-afk pins sticking out the bottom, and the grouping of 4 round holes, can all be eliminated
22:58 katsmeow-afk DesignerThinking.com/images/Stash-O-Tekx/s/DSCF2218.jpg
22:59 Tom_itx nice lathe head
22:59 katsmeow-afk see the box of parts and the plugin to the fore that the parts in question go onto
22:59 katsmeow-afk heh
23:00 Tom_itx what are those?
23:00 Tom_itx oh scope parts?
23:00 katsmeow-afk yeas
23:01 tsmeow-afk shoots a few more
23:01 Tom_itx i don't think i could make it anyway
23:02 Tom_itx is it the back cover?
23:03 katsmeow-afk pics soon
23:04 Tom_itx sleep soon too :)
23:05 katsmeow-afk inputting
23:06 Tom_itx what do you shrink your pics with?
23:07 katsmeow-afk imagemagick cli
23:09 katsmeow-afk uploading
23:09 Tom_itx http://mashable.com/2012/07/08/nasa-mars-panorama/
23:09 katsmeow-afk C:\Program Files\ImageMagick>mogrify -resize 800x "C:\my domains\DesignerThinking.com\images\#reprap\m2\*.*"
23:10 katsmeow-afk http://designerthinking.com/images/%23reprap/m2/DSCF2825.jpg
23:10 katsmeow-afk http://designerthinking.com/images/%23reprap/m2/DSCF2826.jpg
23:10 katsmeow-afk http://designerthinking.com/images/%23reprap/m2/DSCF2827.jpg
23:10 katsmeow-afk http://designerthinking.com/images/%23reprap/m2/DSCF2828.jpg
23:10 katsmeow-afk http://designerthinking.com/images/%23reprap/m2/DSCF2830.jpg
23:10 katsmeow-afk http://designerthinking.com/images/%23reprap/m2/DSCF2831.jpg
23:12 katsmeow-afk camera i usually use is a Fuji Finepix S700 7.1 megapixel with supermacro
23:13 Tom_itx so there's a clip on each side holding to the card
23:13 katsmeow-afk clip can be left off
23:13 Tom_itx both on the bottom?
23:13 katsmeow-afk the piece grouping 4 holes, can be left off, please
23:13 Tom_itx so the bottom would be flat?
23:13 katsmeow-afk yeas
23:13 katsmeow-afk yeas
23:13 Tom_itx just the shround around the pins keep
23:13 katsmeow-afk make it tons easier
23:13 katsmeow-afk yeas
23:15 katsmeow-afk 2028.jpg i had the lens almost on the piece, no zoom, focussed on the pcb sticking thru
23:15 katsmeow-afk i have sat things on the lens and taken clear pics, the supemacro on this is incredible
23:15 Tom_itx i don't have a macro, i wish i did
23:16 Tom_itx i really gotta go sleep
23:16 katsmeow-afk the lil Canon A530 has a regular macro, it doesn't compare
23:17 katsmeow-afk happy sleeps
23:17 Tom_itx ^^ mars photos
23:17 katsmeow-afk you could prolly mill this piece, and if you could i'd try to sell them, i have a buyer now who want more of the used ones i have
23:17 katsmeow-afk i see mars
23:18 Tom_itx what plastic is it?
23:18 Tom_itx plastic is getting darn expensive now
23:18 katsmeow-afk i dunno how much he'll pay in cash, we swapped for stuff last time, he is asking for more again
23:18 katsmeow-afk i dunno, some 1980's prolly prohibited stuff now
23:19 Tom_itx heh
23:19 katsmeow-afk i am real sure pvc would be fine, delrin may work
23:19 Tom_itx i dunno what my plastic guy has, they don't stock delrin
23:20 Tom_itx problem is, i generally get scrap from him so i gotta take what i can get
23:20 katsmeow-afk if it was backed with a thin metal , but not near the pcb slot, any plastic may work, including some slightly flexable
23:20 Tom_itx what's the overall thickness with the tabs gone?
23:20 Tom_itx to the top of the points
23:21 Tom_itx it would be cheap to extrude but a waste of plastic to mill
23:21 katsmeow-afk .982
23:21 Tom_itx ok
23:22 katsmeow-afk .562 to the top of the flat center section of the shroud
23:22 Tom_itx i just wondered the plastic thickness it would take
23:22 katsmeow-afk .142 is the backplate thickness
23:22 Tom_itx gotta sleep now
23:23 katsmeow-afk 2.455 max width
23:23 katsmeow-afk 4.825 max tall
23:24 Tom_itx 1 x 2.5 x 5 block
23:24 katsmeow-afk so a block of plastic 4.825 x 2.455 x 0.982 thick
23:24 katsmeow-afk yeas
23:25 katsmeow-afk i can get bales of plastic bottles, i should look at melting some for fun and profit
23:26 katsmeow-afk even if all i can do is melt into blocks to be milled, i can remelt the swarf into new blocks
23:26 katsmeow-afk it still saves me