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http://indianaquariumhobbyist.com/community/ :: View topic - UPDATED: DIY Hood using Depron - Lights, Fans n timer
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UPDATED: DIY Hood using Depron - Lights, Fans n timer
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Tango
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PostPosted: Sun Dec 14, 2008 11:10 pm Post subject: UPDATED: DIY Hood using Depron - Lights, Fans n timer Reply with quote

 Made  this  hood  using  Depron,  a  type  of  extruded  polystyrene  foam.  Easy  to  work  with.  Unlike  regular  thermacole,  the  surfaces  are  very  very  smooth  and  the  material  is  inherently  very  strong.  In  fact  if  you  are  ok  with  a  white  coloured  hood,  u  dont  even  need  to  paint  and  reinforce  them.  My  hood  can  house  3  x  3'  T5's  along  wioth  a  smaller  fancy  PLL.  desi  name  for  depron  is  Biopac  and  is  relatively  easy  to  find  in  the  right  place.
 
 Step  1:  Draw  out  the  design
 Step  2:  Cut  out  the  parts  using  a  regular  cutter.
 Step  3:  Stick  the  parts  together  (No  CA  glue,  use  only  epoxy  or  any  other  glue  that  does  not  melt  foam!)
 Step  4:  Reinforce  using  fiberglass  cloth  on  the  outside  (not  essential)  and  selectively  inside  (where  you  plan  to  put  the  lighting)
 Step  5:  Paint  the  hood  with  any  water  based  paint  and  primer.  
 Step  6:  Its  ready  to  use!
 
 A  52"  x  44"  12mm  sheet  costs  200  bucks.  Its  cost  effective  and  good  looking!!   It  took  me  2/3  of  a  sheet  and  under  a  day  to  make  my  unpainted  hood.  Painting  took  another  few  days  working  an  hour  or  two  everyday.The  fiberglass  cloth  is  about  250  bucks.  (ask  for  5mil  or  7  mil  woven  cloth)
 
 Remember  to  coat  the  underside  with  a  layer  of  clear  epoxy  paint  to  make  the  paint  splash-proof.  The  regular  'waterproof'  exterior  emulsion  starts  to  smell  of  wet  paint  after  a  few  hours  of  condensations  and  bubble  splashes  on  the  under-side.  Outside  is  fine.  In  case  you  decide  not  to  paint  the  underside  no  coating  is  required  since  the  material  is  inherently  waterproof.  (EDIT:  Dont  paint  underside  let  it  remain  plain)
 
 EDIT:  One  of  the  main  reasons  I  did  a  DIY  was  because  i  couldn't  explain  my  design  to  the  carpenter,  with  the  ventilation,  lighting  fixtures,  depth  etc,  as  i  wanted  it  so  I  thought  i'll  make  a  quick  prototype  to  show  him,  but  as  things  stand  it  looked  good  so  I  decided  to  finish  it.
 
 I  gave  a  sample  of  the  material  to  Nirav  (Nash81)  and  he  has  tested  the  fiberglassed  portion  using  halogens  as  well.  Note  the  clips  for  T5's  in  the  pic  for  step  5.
 
 Let  me  know  if  you  have  any  specific  questions.  
 
 UPDATE:  Added  lights,  fans,  Timer  and  other  Electronics  on  the  hood.  Simple  spcket  at  the  back,  plyug  in  al  everything  works.  Disconnect  and  remove  hood.  its  that  simple.  Btw  the  hood  weighs  about  4kgs  with  everything!
 
 2  x  36W  6500K  Osram  PLL  with  2  x  40W  Electronic  Choke
 1  x  21W  3'  T5  6500K
 1  x  11W  PLL
 4  x  4"  CPU  Fans  12V.  2  on  blower  duty  and  2  on  exhaust  duty.  Option  to  run  one  set  at  a  time.  Temp  is  a  cool  26  deg  in  44  deg  heat.  In  fact  with  one  fan  and  one  blower  I  have  my  heater  set  at  26  and  it  comes  on  once  in  a  while!


Last edited by Tango on Sun May 10, 2009 5:34 pm; edited 7 times in total
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Tango
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PostPosted: Sun Dec 14, 2008 11:17 pm Post subject: Re: DIY Hood using Depron Reply with quote

 Steps  4,  5  &  6...
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shishirkamat
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PostPosted: Sun Dec 14, 2008 11:27 pm Post subject: Re: DIY Hood using Depron Reply with quote

 Hi,
 Excellent  DIY,what  would  be  the  life  of  such  hood?
 Regards
 Shishir  Kamat
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Tango
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PostPosted: Sun Dec 14, 2008 11:37 pm Post subject: Re: DIY Hood using Depron Reply with quote

 i  have  built  model  airplanes  using  this  method  and  some  are  flying  even  after  3  years.  The  efforts  you  put  into  finishing  it  appropriately  will  determine  its  eventual  life.  The  best  part  is  that  unlike  wood,  it  wont  swell  up  or  rot!
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mod-the-pc
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PostPosted: Sun Dec 14, 2008 11:45 pm Post subject: Re: DIY Hood using Depron Reply with quote

 @Tango,  where  would  you  mount  the  ballasts  for  the  lighting  ?
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Tango
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PostPosted: Mon Dec 15, 2008 12:46 am Post subject: Re: DIY Hood using Depron Reply with quote

 The  T5's  i  use  have  in  built  e-balasts.  The  whole  unit  easily  clips  on  too  the  2  clips  you  see  in  the  pic  (step  5).  From  one  side  of  the  unit  there  is  a  lead  which  is  attached  (ordinary  220V  Cd  player  power  lead).  The  unit  height  is  only  1.5"  max.  There  is  also  a  facility  to  gang  up  upto  6  lights  using  interconnectors.  Its  a  pretty  neat  set-up  eventually.
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mithunda
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PostPosted: Mon Dec 15, 2008 2:47 am Post subject: Re: DIY Hood using Depron Reply with quote

 great  DIY  tango..  keep  up  the  good  work.  i  would  look  for  this  material..  i  have  made  a  few  hoods  with  regular  thermocol.  glued  it  with  epoxy  and  brown  tape  and  then  covered  with  fibreglass  sheet.  but  this  material  looks  better  and  hardy..
 
 thanks  for  the  idea
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drug
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PostPosted: Mon Dec 15, 2008 7:50 am Post subject: Re: DIY Hood using Depron Reply with quote

 This  website  http://www.depronfoam.com/technical.htm   mentions  the  temperature  range  as  -60  to  +70.  And  there  are  a  few  mentions  of  bending  the  sheets  under  heat  on  a  few  websites.
 Will  the  sheet  wrap  with  the  temperature  developed  by  the  ballasts  and  the  lights?
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sriki_discus
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PostPosted: Mon Dec 15, 2008 10:03 am Post subject: Re: DIY Hood using Depron Reply with quote

 Amazing  DIY,.  Congrats...
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rohansd
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PostPosted: Mon Dec 15, 2008 10:05 am Post subject: Re: DIY Hood using Depron Reply with quote

 Awesome  DIY  !!
 The  finishing  looks  super.
 Please  make  it  as  an  article  and  submit  it  so  that  it  doesn't  get  lost  in  the  heap  of  posts.
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sandeepraghuvanshi
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PostPosted: Mon Dec 15, 2008 10:51 am Post subject: Re: DIY Hood using Depron Reply with quote

 Nice  one,  and  I  fully  agree  with  ROhan,  submit  it  as  article  under  diy  section.
 It  really  look  nice.
 BTw  is  building  model  airplanes  your  hobby  or  profession.  Very Happy
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blackghost
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PostPosted: Mon Dec 15, 2008 11:23 am Post subject: Re: DIY Hood using Depron Reply with quote

 Really  amazing!
 I  completely  second  rohan's  suggestion.
 Please  write  a  step  by  step  article  so  that  its  easier  for  DIY  amateurs  like  me  to  try  out  Smile
 Cheers!   Thumb Up
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Tango
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PostPosted: Mon Dec 15, 2008 11:24 am Post subject: Re: DIY Hood using Depron Reply with quote

                                                   
unninga  wrote  (View  Post):                
This  website  http://www.depronfoam.com/technical.htm   mentions  the  temperature  range  as  -60  to  +70.  And  there  are  a  few  mentions  of  bending  the  sheets  under  heat  on  a  few  websites.
 Will  the  sheet  wrap  with  the  temperature  developed  by  the  ballasts  and  the  lights?
               

 
 The  portion  where  the  lights  sit  are  covered  with  fiberclass  cloth  and  epoxy.  Nirav  tested  a  fiberglass  covered  sample  with  Halogens  and  he  said  they  it  was  ok.  As  regards  regular  T5's.  I  have  these  all   enclosed  T5's  wherein  heat  is  very  less.  I  have  covered  the  top  part  with  fiberglass  cloth  and  epoxy  resin,  and  those  portions  of  the  bottom  part  where  the  lights  will  sit.  It  should  be  ok.
 
 Rohan  i  will  try  to  do  an  article.
 
 Sandeep,  building  model  airplanes  is  my  first/primary  hobby.  It  was  my  only  hobby  till  recently!!  Rock On   
 
 Btw  spent  today  morning  admiring  the  marine  and  planted  tanks  at  the  domestic  terminal  at  Delhi  Airport..  Thumbs Up  Just  landed  in  Mumbai  and  wil  be  spending  the  week  here  on  business.
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PostPosted: Mon Dec 15, 2008 1:00 pm Post subject: Re: DIY Hood using Depron Reply with quote

 Tango  that's   a  nice  and  neat  hood  that  you  have  made.The  finishing  is  great!  Thumb Up  Thanks  for  sharing  the  pics  .
 
 Regards
 Dinesh
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retro_gk
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PostPosted: Mon Dec 15, 2008 1:30 pm Post subject: Re: DIY Hood using Depron Reply with quote

 Great  DIY  project.  I  really  like  the  finishing  on  the  outside.
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