Reference Compact Bass Unit Build (BD-Design)

by Ray P, Tuesday, November 23, 2010, 13:55 (2612 days ago)

Well, I've got CAD drawings done for the Ref Compact units ready for CNC machining. Unfortunately I caNot obtain 32mm thick Birch Ply. Will I be OK laminating 24mm birch ply and 9mm MDF (=33mm thick) or is it preferable to laminate 18mm and 15mm birch ply (also =33mm thick but quite a lot more cost).

Ray

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Reference Compact Bass Unit Build

by Bert @, Tuesday, November 23, 2010, 15:00 (2612 days ago) @ Ray P

Hello Ray,

Well, I've got CAD drawings done for the Ref Compact units ready for CNC machining. Unfortunately I caNot obtain 32mm thick Birch Ply. Will I be OK laminating 24mm birch ply and 9mm MDF (=33mm thick) or is it preferable to laminate 18mm and 15mm birch ply (also =33mm thick but quite a lot more cost).

The Ref Compact is originally designed for 32mm particle board having a specific panel resoance behaviour with related damping techniques used later on.

Using plywood and/or MDF makes it something else but nevertheless it can work out okay too. What to do is up to you here... :grin:

Birch + MDF will do okay making it nicely "dead" due to the different materials used. 18 + 15mm Birch would be overkill although stiffness has its advantages...

I am not sure about the quality of Birch you have access too but if possible go for full Birch and not the cheap Pine/Birch combo which almost looks the same but is only half the weight!

Bert

--
BD-Design - Only the Best!

Reference Compact Bass Unit Build

by Ray P, Tuesday, November 23, 2010, 16:03 (2612 days ago) @ Bert

Ah! assumptions are dangerous things. I had assumed you had used birch ply.

What sort of particle board did you specify - I'll check it out.

The birch ply I can get hold of is best quality but only available upto 24mm thick. Not cheap though, over £100 a sheet.

Ray

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Reference Compact Bass Unit Build

by Bert @, Tuesday, November 23, 2010, 17:14 (2611 days ago) @ Ray P

What sort of particle board did you specify - I'll check it out.

The cheap stuff...

The birch ply I can get hold of is best quality but only available upto 24mm thick. Not cheap though, over £100 a sheet.

I know, probably the same as used for the REF2010... :good:

Bert

--
BD-Design - Only the Best!

Reference Compact Bass Unit Build

by Ray P, Wednesday, November 24, 2010, 15:02 (2611 days ago) @ Bert

I interpret 'particle board' to be medium density fibreboard (MDF)?

Ray

Reference Compact Bass Unit Build

by Frode, Wednesday, November 24, 2010, 15:20 (2611 days ago) @ Ray P

I think Bert uses what you probably would call chipboard.

Frode

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Reference Compact Bass Unit Build

by Gasper, Wednesday, November 24, 2010, 16:13 (2611 days ago) @ Frode

:yes: :good:

Gasper

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Thanks, that's the material...

by Bert @, Wednesday, November 24, 2010, 16:16 (2611 days ago) @ Frode

...and it is called chipboard (completely forgot the name!). :blush:

Thanks Frode,

Bert

--
BD-Design - Only the Best!

Thanks, that's the material...

by Frode, Wednesday, November 24, 2010, 16:46 (2611 days ago) @ Bert

Both names can be used:

Particle board, or particleboard (or chipboard in the UK, Australia and some other countries)

Frode

Reference Compact Bass Unit Build

by Gasper, Wednesday, November 24, 2010, 07:41 (2611 days ago) @ Ray P

Why don't you use two 16 mm particle boards glued together with polyuretane glue (under preasure) and get 32 mm...:cool:

Gasper.

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