Another Project on the Way Slim Floor Standers (M T M)

[sadik]

hi sadik.

Nice finish,you have mastered the art of making boxes..

Just will explain you the advantages of front baffle edge rounding or 45 deg chamfering.

When sound travels from the speakers esp..tweeter and midrange drivers (directional sound) they tend to get scatered in all directions,and since the edges on front baffle are sharp the waves tend to get reflected from them and get mixed up from the direct waves coming towards the listener,which results in colouring of the original waves that we should normally listen to...

This process is called diffraction and we must avoid to get clear original sound,this case is not applicable to sub freq (omni-directional),Since the bass frequencies have longer wavelengths, they will spread out more than the high frequencies.

Just my few cent,But can assure you the above will improve your listening.

One clarification.

How do you fix your panels (front,back,side and bracing)
,i.e is bracing assembly is fixed to the side panels first,or to the front and back panels..??/

Thanks
r/s.

Thank you very much for the Information.

Regarding assembly. (Step wise)
1. Assembled All the Braces first with respect to any one of Side Panel. (A Side panel was used as a guide to assemble the braces with each other)
2. Assembled the complete assembly of Braces with the Side panel (The one which was used as a guide)
3. Then Front Panel.
4. Back Panel.
5. The Other Side Panel.
6. & Last Top & Bottom.

Regards,
Sadik Bhatkar

 

[sadik]

Brilliant work Sadik:clapping:

Thank You Sir.

 

[arunkvivek]

probably stage by stage youtube lesson would help us even more, Sadik. :licklips:
Brilliant work!!! :clapping:
I had a DIY Philips speaker in plan. But, dropped them due to workload. Now, you are tempting me to get back on track.

 

[sadik]

probably stage by stage youtube lesson would help us even more, Sadik. :licklips:
Brilliant work!!! :clapping:
I had a DIY Philips speaker in plan. But, dropped them due to workload. Now, you are tempting me to get back on track.

Its Difficult to Capture Photos or Videos when it is One Man Show. I Cannot Capture the Photos when work in Progress because the hands are really dirty to touch the camera. You can see all my Photos uploaded are stage wise completed assembly.

If you or any of our forum member needs tips related to woodworking they can PM me, I will be very happy to guide everyone.

Regards,
Sadik Bhatkar

 

[arunkvivek]

Its Difficult to Capture Photos or Videos when it is One Man Show.

Regards,
Sadik Bhatkar

I can understand. I wanted to understand the bearings of wood working before actually attempting the precision job needed for speaker building. So, I commissioned a DIY project - building up wooden rack in my balcony (8 feet tall) and the doors for them (including veneering them). It was quite an eye-opener. I ended up buying a circular saw, a planar and building a foldable table which can be used as a workstation for the woodwork. I wanted to make a pictorial log of the journey but could only click a dozen of pics. I worked on the project for almost a month ( couple of hours everyday and all weekends) but did not record the events at all.

This job did not require much of a precision but it did break my back. Looking at your builds and the precision required, I bow down to your passion for such gorgeous builds.

 

[sadik]

For the First time I will be trying my hands for the Mirror / Piano Finish so trying to get the required ingredients (tools). I Already had a Sander of "Makita" make, but it just had orbital movement. But this one has orbital as well as circular motion which is really good to get the levels completely flat.

This is called "Naal ke liye Ghoda Khareedna" :lol:

Sadik

 

[sadik]

From Today I have started the Painting Process. The Procedure will be as per below steps.

1. Sanding the Complete Enclosure with 220 Grit Sand Paper, This will wipe away all the standing Fibers of MDF specially on the Joints & Make the Joint surfaces even.

2. Sanding Sealer. (Its purpose is to "seal" the pores of the wood to give a smooth, even surface for the top coats.)
The First & Second Coat will be a Sanding Sealer. This sealer is fast dry, NC based, Any sealer can do the Work. I am using Sanding Sealer because after first coat I will be sanding it. The First Coat will be thick as I will be sanding it with 240 grit sand paper & almost 80% of the sealer will be sanded off, This layer will fill up only the deep pores in MDF. After sanding I will apply the second coat of sealer. This coat will be a thin layer. After drying, Again I will be sanding it lightly with 400 grit sanding paper to make the surface smooth. Please note 400 Grit sanding for an MDF is really a smooth surface. So In this step the sealing of MDF will completed & will be ready for next step.

2. Primer
After finishing the above step. The second stage will be applying coat of Primer. This is also NC based Primer which is fast drying. After drying I will lightly sand it with 600 Grit sand paper just to make the surface smooth. If required i will repeat this process one more time.

3. Final Paint.
After finishing above steps the Enclosure will be ready for Final Paint. I will Apply 2 Coats of Final Paint to get the required finish.(I have Still Not finalized the shade of final paint bit confused between White, Black & Cherry Color)

Below are the Photo of Sander Sealing & Primer which I am using.

4. Polishing.
I will write about it when the enclosures will be ready for this step.

Regards,
Sadik Bhatkar.

 

[VSTEREO]

Thank you for adding micro details of woodworking. It really helps beginners like me to understand how best wood finish is achieved.

 

[sadik]

Thank you for adding micro details of woodworking. It really helps beginners like me to understand how best wood finish is achieved.

That's why we are here on our Forum. To share what we know & to learn what we don't know. & I am really happy to know my experience & knowledge related to wood working is helping New DIYer's

Sadik Bhatkar

 

[rajesh srinivas]

That's why we are here on our Forum. To share what we know & to learn what we don't know. & I am really happy to know my experience & knowledge related to wood working is helping New DIYer's

Sadik Bhatkar

Absolutely 100% true to your words,knowledge and experience is all about sharing and learning,you cannot keep it as a secret and be selfish to not let others know of your doings.

The more you share will be the more you can learn,and this forum is a platform of doing just that.

Hats off to your indepth step by step details provided by you,i bet even a laymen can follow easily and achieve perfection his projects.

Keep sharing.

Thanks
rajesh

 

[sadik]

After a break of about a week my Vehicle is back on track. Posting some updates of today's work.

Below is the pic of enclosure after applying & sanding of sealer.

A closer look. You can see there is a nice glossy coating on the MDF Board.

After Applying 1st Coat of Primer. The Primer is grey shade which will be sanded tomorrow with 600 grit sand paper. After finishing the sanding task, the Enclosures will be ready for Final Paint.

Sorry about the low quality of images there was no proper light when i took the photos. I do not prefer using flash light while clicking photos, it changes the tone of original color.

Sadik

 

[jmascreen]

Hi Sadik,

What is the port size? Also what do you use as adhesives?

 

[sadik]

Hi Sadik,

What is the port size? Also what do you use as adhesives?

The Port Size is 4" ID (100 mm) The Adhesive used is "Fevicol-SH". More Info in Post No 1.

Sadik

 

[jmascreen]

The Port Size is 4" ID (100 mm) The Adhesive used is "Fevicol-SH". More Info in Post No 1.

Sadik

Thanks Went through the post #1, what is the reason for 4" port? Just want to understand personally

 

[rajesh srinivas]

hi sadik,

Hope this polish finish compound will give that piano finish shine as desired by you for your spk box.

I had come across some where that it will give better final finish to your box,

available in ebay.

3M Perfect-it 1 Step Finish Compound FOR REMOVING SCRATCHES ON CAR POLISH BIKES | eBay

3M Perfect-It Machine Polish

demo: you tube.

https://www.youtube.com/watch?v=2S-x7Pmv-HQ

thanks
rajesh

 

[sadik]

Thanks Went through the post #1, what is the reason for 4" port? Just want to understand personally

AFAIK the Port size should be capable to avoid any kind of noise generated by port velocity at desired tuned frequency. The reason to keep such a big port is to avoid this noise even if the speakers are driven at full load. I generally keep the port velocity below 20 m/s. The Velocity of this port is 15 m/s when speakers are driven at 50 watts power @ 41 Hz.

Sadik

 

[sadik]

hi sadik,

Hope this polish finish compound will give that piano finish shine as desired by you for your spk box.

I had come across some where that it will give better final finish to your box,

available in ebay.

3M Perfect-it 1 Step Finish Compound FOR REMOVING SCRATCHES ON CAR POLISH BIKES | eBay

3M Perfect-It Machine Polish

demo: you tube.

https://www.youtube.com/watch?v=2S-x7Pmv-HQ

thanks
rajesh

Thanks for the links. I will be using car polish & already I have a kit from Amway & it works like a Charm.

Edit: The Youtube link is not working
Sadik

 

[sadik]

Update.

Today I sanded the first coat of NC primer. I Tried dry sanding first, but the sanding was not proper, it was not sanding as it should be. Then i realized this primer is NC based & used in Automotive Paints.

In Auto Paint Shops wet sanding is done. My Enclosures are already sealed with Sealer so a little amount of water will not effect the MDF. It will affect only if it Penetrates inside the Board. I took a Proper care while wet sanding the NC Primer. I used Spray Bottle to Spray Water on the Primer & Sanded the whole Enclosure with Sanding Block (I made the block myself with some MDF waste). I did not use the Sanding machine as Water can cause damage to the machine.

Some may feel above method i used may be wrong, but it has worked for me.

Below are the Images of same.

The Above image is a close up of the sanded primer. The surface is not even after sanding the First Coat. It looks grainy. Therefore today I have sprayed second coat of primer. Tomorrow I will again sand it.

Sadik

 

[crosstalk]

Such an eye treat. Anxiously waiting for the final one.

 

[VSTEREO]

Update.

Absolutely stunning piece of work. Great Sadik.