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http://indianaquariumhobbyist.com/community/ :: View topic - Correct cut sizes of glass to be used for making a tank
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Correct cut sizes of glass to be used for making a tank

 
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Joy
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PostPosted: Mon May 29, 2006 5:00 pm Post subject: Correct cut sizes of glass to be used for making a tank Reply with quote

 Hi  friends  !
 
 I  have  been  given  the  understated  sizes  for  making  a  finished  tank  sized  48"  x  18"  x  18"  by  an  aquarist  as  stated  :
 
 Front  and  Back  48"  x  18  "    [2  Pcs]
 
 Sides  17  1/4"  x  18"  [  2  Pcs]
 
 Bottom  17  1/4"  x  47  1/4"  [  1  Pc]
 
 Suppot  17  1/4"  x  2"  [1  Pc]
 
 Supports  17  1/4"  x  4"  [  2  Pcs]
 
 Can  all  the  experienced  friends  help  me  out  and  confirm  if  the  sizing  as  indicated  is  correct,  if  not  what  should  be  the  correct  sizing  for  each  piece  of  glass  that  will  be  needed  for  making  the  tank.?
 Regards
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ajaikumarr
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PostPosted: Mon May 29, 2006 5:18 pm Post subject: Re: Correct cut sizes of glass to be used for making a tank Reply with quote

 Go  for  8mm  glass.
 
 
                                                 
Joy  wrote:                
Front  and  Back  48"  x  18  "    [2  Pcs]                

 Right
 
 
                                                 
Joy  wrote:                
Sides  17  1/4"  x  18"  [  2  Pcs]                

 Should  be  17".9mm  x  18".  (Here  you  have  to  reduce  8mm  (front  glass  thickness)+  8mm  (back  glass  thickness)  from  an  inch.  approx  25mm  is  an  inch).
 
 
                                                 
Joy  wrote:                
Bottom  17  1/4"  x  47  1/4"  [  1  Pc]                

 Should  be  18"  x  48"  (it's  good  to  go  for  12mm  glass  for  bottom)
 
 
                                                 
Joy  wrote:                
Suppot  17  1/4"  x  2"  [1  Pc]                

 18"  x  2"  (side  supports  2  pc)
 
 
                                                 
Joy  wrote:                
Supports  17  1/4"  x  4"  [  2  Pcs]                

 18"  x  4"  (center  support  1  pc)
 
 Or  you  can  go  for  
 48"  x  2"  (front  &  back  support  so  2  pc)  and  18"  x  4"  (side  supports  2  pc).
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rskelkar
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PostPosted: Mon May 29, 2006 10:16 pm Post subject: Here are some suggestions Reply with quote

 Dear  Joy,
 
 Here  are  some  suggetions.
 
 First  you  have  to  resolve  two  issues.
 
 Issue  One:
 
 Glass  size.  I  agree  with  Ajay  Kumar  8mm  is  correct  size  of  glass  for  the  tank  that  you  are  planning.  However,  I  would  recommend  using  10mm  or  preferably  12mm  for  the  bottom.  It  is  additional  safety.  The  choice  is  yours.
 
 Issue  Two:
 
 Whether  the  front  and  back  are  overlapping  the  bottom  or  are  all  sides  standing  on  the  bottom?  The  internet  community  is  divided  on  this  issue.  Though  I  feel  the  opinions  tilt  in  favour  of  sides  standing  on  the  bottom.  I  personally  prefer  sides  standing  on  the  bottom.
 
 Once  you  decide  on  these  two  issues,  you  can  finalise  the  Bill  of  Material.
 
 The  sides  standing  on  the  bottom  looks  like  this:
 
 
 
 The  dimentions  for  tank  are  L  (Length)  X  B  (Breadth)  X  [  H  (Height)+Thickness  of  bottom  glass.  ]
 
 The  dimensions  for  glass  are:
 
 Bottom  :  L  X  B
 
 Front  &  Back  :  L  X  H
 
 Sides  :  (  B  -2*Glass  Thick.)  X  H
 
 Totally  Five  pieces.
 
 For  braces,  they  look  like  :
 
 
 
 
 Front  and  back  bracing  can  be  2"  wide.  The  bracings  in  the  Breadth  need  to  be  3"  wide.
 
 Bill  of  material  for  braces  is  as  under  :
 
 Front  &  Back  bracing  :  (L  -  2*Thickness  of  Glass)  X  2"  -  2  Nos.
 
 Breadth  Bracing  at  the  sides  :  (B-2*Thickness  of  Glass)  X  3"  -  2  Nos.  as  shown.
 
 Centre  bracing  :  (B-2*Thickness  of  glass)  X  3"  as  shown.
 
 Totally  five  pieces.
 
 The  braces  at  the  front,  back  and  sides  require  a  45  degree  cut  of  about  1/2"  to  accomodate  the  silicone.
 
 For  a  planted  tank  I  will  prefer  21"  hieght.  It  gives  upto  18"  water  column,  not  unsurmountable  for  ordinay  flurocent  tubes.  You  do  not  need  MH  for  21"  high  tank.
 
 Before  you  do  anything  please  read  this  informative  article  by  Madan  :
 
 http://iah.in/community/modules.php?name=News&file=article&sid=26
 
 However  while  reading  the  article  at  many  places  you  have  to  read  cm.  (  centimeters)  in  place  of  mm  (  millimeters).  In  some  places  you  have  to  read  3ft  instead  of  1ft.
 
 Please  do  not  order  polish  grinding  of  all  the  sides  of  the  glass  as  the  article  says.  Some  sides  need  to  be  left  unpolished.
 
 I  will  guide  you  through  once  you  finalise  on  the  basic  two  issues.
 
 There  are  other  issues  before  assemblying  the  glass  sheets,  which  we  can  discuss  later.
 
 Enjoy  building  your  tank.
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Madan
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PostPosted: Tue May 30, 2006 7:49 am Post subject:  Reply with quote

                                                   
Quote:                
Before  you  do  anything  please  read  this  informative  article  by  Madan  :  
 
 http://iah.in/community/modules.php?name=News&file=article&sid=26  
 
 However  while  reading  the  article  at  many  places  you  have  to  read  cm.  (  centimeters)  in  place  of  mm  (  millimeters).  In  some  places  you  have  to  read  3ft  instead  of  1ft.                  

 
 Ravi,  need  to  correct  this  and  back  up  the  corrected  version,  the  old  uncorrected  version  was  not  removed  from  the  data  back  up  I  think.
 
 It's  posted  by  SysAdm  I  don't  have  access  to  Edit.
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Joy
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PostPosted: Tue May 30, 2006 11:06 am Post subject:  Reply with quote

 Ravi,
 Thanks  for  all  the  information,  well,  after  reading  your  post,  I  would  like  to  resolve  both  your  stated  issues  as  under  :
 Issue  One
 I  would  like  to  use  a  10  mm  thick  glass  for  the  bottom
 Issue  Two
 I  would  go  for  all  the  sides  standing  on  the  bottom  glass
 regarding  the  availability  of  18"  water  coloum  for  a  fresh  water  tank  with  plants,  I  agree  with  your  openion  and  will  maintain  the  height  of  the  tank  to  21",  keeping  these  parameters  in  mind  the  new  dimension  of  the  tank  now  will  be
 
 48"  x  18"  x  21  "
 
 Regards
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Sandeep
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PostPosted: Tue Jun 20, 2006 4:52 pm Post subject: quarantine tank Reply with quote

 Hi,
 
 I  am  planning  to  build  a  small  quarantine  tank  myself,  it's  dimensions  being:
 
 18"x12"x12"
 
 I  would  like  to  know  if  I  need  to  get  all  sides  polish  grinded  or  some  are  to  be  left  (maybe  for  proper  bonding  of  silicone)  ungrinded....
 
 Also,  is  6mm  okay?
 
 Pls.  enlighten  me    Smile
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Madan
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PostPosted: Tue Jun 20, 2006 5:05 pm Post subject:  Reply with quote

 Sandeep  6mm  glass  for  your  18  x  12  x  12  tank  is  more  than  enough.  Infact  5  mm  glass  will  do.
 
 For  such  a  small  tank  Polish  grinding  is  not  needed,  however  I  still  do  it,  make  sure  the  edges  are  hand  ground  to  avoid  getting  cuts.
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Sandeep
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PostPosted: Tue Jun 20, 2006 5:15 pm Post subject:  Reply with quote

 Thanks  Madan  for  a  quick  reply.  Hand  ground  means  I  should  ask  the  shop  guy  to  do  it  instead  of  machine  ground  or  do  I  do  it  myself  using  emery  paper  or  something  else?
 
 Thanks  much,
 Sandeep
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Madan
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PostPosted: Tue Jun 20, 2006 5:49 pm Post subject:  Reply with quote

 Emery  paper  will  not  do,  you  need  a  grinding  stone,  the  shop  guy  will  do  it  for  a  small  amount.  Make  sure  there  are  no  sharp  edges.
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rogus
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PostPosted: Wed Sep 20, 2006 4:00 pm Post subject: Re: Here are some suggestions Reply with quote

 Very  informative  post,  rskelkar.  Thanks.
 
 
                                                 
rskelkar  wrote  (View  Post):                
Before  you  do  anything  please  read  this  informative  article  by  Madan  :
 http://iah.in/community/modules.php?name=News&file=article&sid=26
 Please  do  not  order  polish  grinding  of  all  the  sides  of  the  glass  as  the  article  says.  Some  sides  need  to  be  left  unpolished.                

 
 Can  someone  explain  me  the  purpose  of  leaving  some  sides  unpolished?  Which  are  those  sides?  
 
 Madan:  I  read  you  article.  There  is  a  minor  typo  for  the  4  X  2  X  2  tank  thickness.  It  says,  2mm  thickness,  instead  of  12mm  perhaps?
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Madan
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PostPosted: Wed Sep 20, 2006 5:10 pm Post subject: Re: Correct cut sizes of glass to be used for making a tank Reply with quote

 Rogus,
 
 Polish  every  side.  Do  not  leave  any  side  unpolished.
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aquascapes
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PostPosted: Wed Sep 20, 2006 7:20 pm Post subject: Re: Correct cut sizes of glass to be used for making a tank Reply with quote

 madan  actually  grinding  is  the  right  word  not  polish.
 When  we  in  layman's  language  say  polish  the  glass  shop  fellow  will  take  it  as  crystal  polish!
 I  personally  dont  prefer  crystal  polished  glass  because  the  bonding  strength  decreases
 
                                                 
Quote:                
Emery  paper  will  not  do,  you  need  a  grinding  stone,  the  shop  guy  will  do  it  for  a  small  amount.  Make  sure  there  are  no  sharp  edges.                

 He  dare  not  take  a  single  penny  if  you  buy  your  glass  from  him!   Very Happy
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Madan
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Joined: Jun 29, 2003
Posts: 7087
Location: Bengaluru, India

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PostPosted: Wed Sep 20, 2006 8:07 pm Post subject: Re: Correct cut sizes of glass to be used for making a tank Reply with quote

 Hi  Nauzer,
 
 Out  here  Guys  use  the  term  "Polish  Grinding".  They  use  a  machine  to  get  the  even  surface  unlike  using  a  manual  grinding  stone  or  motor  driven  sanding  belt  and  moving  the  glass  over  the  belt  by  hand.  A  0.5  to  1.0  mm  Chamfer  at  the  edges  is  optional.
 
 "Polish  Grinding"  is  the  same  standard  that  I  have  seen  in  excellent  professionally  made  tanks  in  Bangalore  and  by  a  couple  of  tank  makers  in  Singapore.
 
 Crystal  Grinding?  New  Term  to  me.  Very Happy  I'll  ask  around  about  this  next  time  around.
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aquascapes
Committed Member of IAH
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Joined: Dec 19, 2005
Posts: 2753
Location: Surat, Gujarat

Status: Offline
PostPosted: Wed Sep 20, 2006 9:29 pm Post subject: Re: Correct cut sizes of glass to be used for making a tank Reply with quote

 Actually  madan,
 what  I'm  talking  about  is  known  in  the  trade  as  'crystal  edge'  finish  it  is  mostly  done  in  the  same  manner  but  the  belt  that  is  used  is  not  meant  for  grinding  but  for  polishing  -  see  the  edges  of  the  dining  table  glass  -  get  what  I  mean?
 Now,  the  grinding  that  I  mean  is  what  you  mention  in  your  earlier  post  -  which  is  either  done  with  a  hand  held  grinder  or  with  a  stone  (normally  known  as  the  grinding  stone)  -  such  a  finish  gives  the  borders  of  the  glass  edges  a  white  finish  which  looks  like  smoke  glass.  -  Such  a  grinding  being  rougher  compared  to  the  polish  grinding  gives  a  better  bonding.
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