Speakerplans.com Homepage
Forum Home Forum Home > Plans > Scoops
  New Posts New Posts RSS Feed - Filling old bolt pattern and drilling in a new one
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Filling old bolt pattern and drilling in a new one

 Post Reply Post Reply Page  12>
Author
Message
love2all View Drop Down
Registered User
Registered User


Joined: 30 October 2015
Location: london
Status: Offline
Points: 116
Post Options Post Options   Thanks (0) Thanks(0)   Quote love2all Quote  Post ReplyReply Direct Link To This Post Topic: Filling old bolt pattern and drilling in a new one
    Posted: 07 September 2017 at 12:26pm
Never had to do this before as always used reccomended drivers or always purchased loaded....

I need to fill in a PD bolt pattern to make room for a different driver brand and then drill in the new bolt pattern. Speakers are expensive and in mint condition so want to make sure its 100% right aesthetically and that its 100% sealed.

Ive got a professional on the case however ive had suggestions ranging from 2 part filler and sanding too glue and a dado rail slightly larger than the holes to be glued and hammered in.

Interested to see how the other pro's here would tackle this issue?? Also want to make sure the driver is mathematically centered correctly...any tips to ensure they are not off centre.

Thank you!
Back to Top
imageoven View Drop Down
Old Croc
Old Croc


Joined: 28 March 2007
Location: Scotland
Status: Offline
Points: 1613
Post Options Post Options   Thanks (0) Thanks(0)   Quote imageoven Quote  Post ReplyReply Direct Link To This Post Posted: 07 September 2017 at 10:14pm
What sort of cab is it? is access easy enough?

I would just use filler in the holes.
Knocking some dowels in tight, trimming and then filling would be stronger but overkill. A plug of filler 6mm or so in diameter and 18mm deep will have plenty of surface area to bond to so is not coming out of the hole easily. Press it in from both sides.

Why does the driver need to be 'mathematically centered'? Can you not just drop the driver in the hole, measure the distance to the edge of the cab on each side and adjust until they're the same?, then mark up the new fixing points.
Keep pushing on, things are gonna get better.
Back to Top
nickyburnell View Drop Down
Old Croc
Old Croc


Joined: 06 February 2005
Status: Offline
Points: 3797
Post Options Post Options   Thanks (0) Thanks(0)   Quote nickyburnell Quote  Post ReplyReply Direct Link To This Post Posted: 07 September 2017 at 10:44pm
Use t nuts that are there with a countersunk head bolt. Do them up and leave them flush

It's everything, not everythink!
Back to Top
love2all View Drop Down
Registered User
Registered User


Joined: 30 October 2015
Location: london
Status: Offline
Points: 116
Post Options Post Options   Thanks (0) Thanks(0)   Quote love2all Quote  Post ReplyReply Direct Link To This Post Posted: 07 September 2017 at 10:46pm
Cabs are......you guessed it...scoops. thanks for your knowledge.
Back to Top
love2all View Drop Down
Registered User
Registered User


Joined: 30 October 2015
Location: london
Status: Offline
Points: 116
Post Options Post Options   Thanks (1) Thanks(1)   Quote love2all Quote  Post ReplyReply Direct Link To This Post Posted: 07 September 2017 at 10:47pm
@nicky I like this method...nice and quick. Will it be completely sealed though?

Edited by love2all - 07 September 2017 at 10:48pm
Back to Top
nickyburnell View Drop Down
Old Croc
Old Croc


Joined: 06 February 2005
Status: Offline
Points: 3797
Post Options Post Options   Thanks (0) Thanks(0)   Quote nickyburnell Quote  Post ReplyReply Direct Link To This Post Posted: 07 September 2017 at 11:11pm
Done it loads, chuck some silicone around the bolt if you like. I actually used a layer of gaffa under driver to act as gasket when I did it on some old chipboard cabs.
It's everything, not everythink!
Back to Top
love2all View Drop Down
Registered User
Registered User


Joined: 30 October 2015
Location: london
Status: Offline
Points: 116
Post Options Post Options   Thanks (0) Thanks(0)   Quote love2all Quote  Post ReplyReply Direct Link To This Post Posted: 08 September 2017 at 7:21am
Nice tip! Thank you
Back to Top
Dub Specialist Sound View Drop Down
Old Croc
Old Croc
Avatar

Joined: 15 November 2013
Location: Smethwick
Status: Offline
Points: 3756
Post Options Post Options   Thanks (0) Thanks(0)   Quote Dub Specialist Sound Quote  Post ReplyReply Direct Link To This Post Posted: 08 September 2017 at 9:09am
As we box builders know few ways

Use a dowel plug, then use polythene glue that will fill any very very tiny gap will be filled 

as it expands

aslo 2pack filler , will be rock solid

filled many customers boxs with way bigger holes gauges , like someone has kicked a great big hole in a box one time, sorted it no problem at all



Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
Back to Top
nickyburnell View Drop Down
Old Croc
Old Croc


Joined: 06 February 2005
Status: Offline
Points: 3797
Post Options Post Options   Thanks (1) Thanks(1)   Quote nickyburnell Quote  Post ReplyReply Direct Link To This Post Posted: 08 September 2017 at 9:44am
Originally posted by love2all love2all wrote:

Nice tip! Thank you
 
And of course you can reverse the situation should you change drivers back
It's everything, not everythink!
Back to Top
love2all View Drop Down
Registered User
Registered User


Joined: 30 October 2015
Location: london
Status: Offline
Points: 116
Post Options Post Options   Thanks (0) Thanks(0)   Quote love2all Quote  Post ReplyReply Direct Link To This Post Posted: 08 September 2017 at 10:06am
Solid advice!
Back to Top
snowflake View Drop Down
Old Croc
Old Croc


Joined: 29 December 2004
Location: Bristol
Status: Offline
Points: 1827
Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 08 September 2017 at 10:14am
to centre it just put the driver in the hole and then push it as far as it will go toward each bolt position and mark with a pencil. you will then have eight pencil marks around the driver - if you get it equal distance from each it is centred.
Back to Top
love2all View Drop Down
Registered User
Registered User


Joined: 30 October 2015
Location: london
Status: Offline
Points: 116
Post Options Post Options   Thanks (0) Thanks(0)   Quote love2all Quote  Post ReplyReply Direct Link To This Post Posted: 08 September 2017 at 10:26am
Thanks will try this...really impressed with nickys solution first time anyone suggessted this.
Back to Top
 Post Reply Post Reply Page  12>
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 11.10
Copyright ©2001-2017 Web Wiz Ltd.

This page was generated in 0.063 seconds.