Homemade Table Saw (WIP)

DIY Table Saw

This is one of my prized possession and the most used tool in all of my projects. It is the centre of my workshop as it serves multi-purpose and used as a table saw and workbench. 
I was never happy with the results of the circular saw as the cuts are not very accurate. It becomes very difficult to cut small pieces with circular saw as there is no way to properly fasten the piece properly.
Converting the circular saw into a track saw has solved the accuracy part somewhat.
I decided to build a table saw for doing this i had purchased one more circular saw as i wanted to keep a spare circular saw for ripping long plywood boards.
The metal base of the table saw comes from a folding table. For Table top i am using 18mm plywood. To protect the table top have applied few coats of water based PU.

Table size is 3.5' X 2.5' which is plenty for my usage. Saw is attached on one side instead of attaching it on the centre of the table this gives me more surface to attach the fence. Fence can be adjusted from 0' to 2.3'. So i can easily rip 2' wide material on the saw. Fence can be placed on both the sides of the saw, Placing the guide on the left side of the blade comes in handy when i am cutting thin pieces 
(< 1') from a wide board so i get additional surface to support the board. I have plans to install sliding outfeed support in future.
Using table saw requires lot of care as it can be very dangerous if used improperly. I came to know this the moment i used it for the very first time as the danger of kickback and loosing a figure is very real. A Riving knife is a must safety device for the table saw as it prevents kickback. Initially i was using a nail in front of the blade which was a bit wider than the saw blade as a riving knife.
Riving knife or splitter makes a cut very safe as it prevents the stock from binding to blade resulting in a kick back.
I have made 2 zero clearance insert for the saw one is fitted with a riving knife which is made by gluing 2 1mm laminate pieces. The other insert is used for cutting rabbets. 
DIY Table Saw
Table Saw zero clearance Insert one with riving knife and one without it 
Before every cut i double check that the guide is perfectly parallel to the saw blade. Having a riving knife also helps me detect a binding problem early in the cut as the stock becomes difficult to push through the saw when the guide is not set parallel to the blade and reduces the chances of kickback.
Also i always use push stick to push the stock through the saw when i get close to the blade.
Even with all this precautions the table saw still can be very dangerous tool and demands lot of attention during cut.
DIY Table Saw
Table Saw Guide
I am using C-Clamp to fix the saw guide in place. It took a lot of tuning with the guide to make it parallel to the saw blade. Now it working perfectly. The guide has 2 surfaces so it can be used on either side of the saw without flipping the guide. I have also created storage space in the guide where i store essential tools like measuring tape, marking pen etc. I still have to create a lid for the storage as saw dust gets inside these storage space during the cut.
DIY Table Saw
Mitre slots

The table saw has 2 mitre slots which have been cut by router. It took me lot of time to cut them perfectly parallel to the blade. I am using the mitre slots as a guide for the mitre sledge.

Dust Collection

A table saw creates lot of saw dust, Majority of this saw dust goes under the saw as the primary cutting teeth direction is downwards, So i have created a Saw Dust collection bin under the table saw where most of the saw dust gets accumulated during the cut. I am able to get more than 90% of the saw dust in this bin, around 10% of the saw dust is produced by the rising teeth as it scores the inner surface of the cut. Saw dust on top of the saw can be reduced by lowering the blade so that only the teeth protrude over the cut.
I am very happy  now as i am not covered in saw dust after every cut.
One more big advantage of the dust storage bin is that it acts as a suppressor and greatly reduces the saw noise.
DIY Table Saw

I have removed the side plate of the saw to allow the saw dust to easily fall down in the bin. Saw guard is still attached which i have to remove.
DIY Table Saw
Toggle Clamps to support the Bin
This  Saw Dust collection bin is attached with 4 toggle clamps and can be easily removed for clearing out saw dust.
DIY Table Saw
Saw Dust collection
As the motor is completely sealed inside the dust collection bin now i have to figure out a way to remove very fine dust which remains suspended in the air as it will clog the motor in long run and reduce the life of the bearings. Also on using the saw for long duration the saw gets heated as there is not enough room to circulate the air. I have a plan to attach a small fan to filter this small dust particles and circulate the air. Using my Karcher MV3 Vac will be an easier option but i don't want the additional sound from the Vac.

Making Table Saw Lift

Since the bottom of the saw was covered with the dust bin it had become difficult to adjust the saw blade height as i have to remove the dust collection bin each time to adjust the blade height and attach it back again. So i created a lifting mechanism for lowering or raising the blade height. I am using a 8mm SS threaded rod which is connected to a sliding mechanism with 2 T-Nuts which lowers and raises the blade.
Have generated the gear templates from online application created by Matthias Wandel available at
http://woodgears.ca/gear_cutting/template.html. This guy is really genius.
DIY Table Saw
Cutting gears on JigSaw mounted under the table
Till now i have not created any mechanism to adjust the bevel angel in the saw as i use this feature very rarely.
DIY Table Saw
8mm T-Nuts for saw lift

DIY Table Saw
Saw lift with T-Nuts installed and threaded rod

DIY Table Saw
Gear ratio 1:4
The gears help in increasing the speed of lowering and raising the blade. Bigger gear has 24 teeth and smaller gear has 6 teeth. Having gear mechanism is also not fast enough when i have to fully raise the blade, In this case i use my Impact driver with a socket wrench to quickly do the job.

This project is still WIP i am still extending and tuning the design.
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13 comments :

  1. Looks awesome. Lots of hard work.

    What equipments & materials were used? How much time did it take?
    A recipe like structure for a DIY post may help.

    The full pic is grand. Not all individual pics helped in visualizing the whole.

    Thanks for posting.

    ReplyDelete
    Replies
    1. Hi Shiv,
      Table top is made from 12mm plywood.
      Main tool used for this project was the circular saw and router.
      This project is still WIP
      I might create 3D plans for this project in SketchUp in future and post them
      it will help viewers to better understand the design then.

      Delete
    2. Hi Apoorv,
      I am getting quite motivated by your bold projects and you are very good at them too.
      I am struggling to get some good quality tools and would like your help. I am around in Whitefield at Bangalore.

      Thanks in advance,
      Amit

      Delete
    3. Thanks Amit. I too stay in Bangalore. SJP Road Bangalore is the one stop solution for all your tool needs. Do let me know what exactly are you looking for so i can give you some suggestions.

      Delete
  2. Good going there Apoorv. I do admire your determination and skill to have fabricated that table. Keep up the good work.

    I couldn't help noticing the steel framework supporting the table. I have a 2' x 3' table with exactly the same fitting and I use it for indoor tabletop photography :-) . I suppose you removed the original laminated tabletop to make way for your custom plywood top. I had purchased it for Rs. 650 in a lane parallel to SP Road, which had numerous selling various type of steel furniture.

    All the best for your projects.

    ReplyDelete
    Replies
    1. Thanks Vinod.
      You are right about the steel frame. It comes from a old folding table bought from shivajinagar long back.

      Delete
    2. Thanks Apporv. I've posted some queries in your post of your TV console. Please take a look

      Rgds
      Vinod

      Delete
  3. HI Apoorv,

    Great Job. Your work is inspiring. I have very small place to work in my Apt. I was looking for Table Saw. But, not enough motivated to buy it :-)way to costly for my DIYs.

    From where did you get those spring clamps & F-Clamps? Any specific brands? How much they costed you?

    ReplyDelete
    Replies
    1. Thanks Subhan,
      I have bought the clamps locally brand is Yato and Taparia. Yato F-clams are 300mm and costed around 700Rs and spring clamps around 160Rs each. You can buy them from goodwill http://www.goodwill.in/hand-tools/clamps-and-vices?source=subcategory

      Delete
  4. Hi Apoorv, I am new to this wood work....as a hobby i have my first kit...bosch 13RE drill kit. As a second essential tool i am finding plywood cutter...after searching i was confused between Black & Decker CS 1500 vs Skil 5301 (after reading your post about bosch gks 7000 vs skil 5301...dropped bosch gks 7000). is Skil 5301 is a good one? (intend to purchase from Tolexo for Rs.3884/-)

    Kindly suggest me in this regard, to buy a good circular saw for home use only (as a new DIYer).

    or any other brand ?? in your view

    please help...thanks..bye

    ReplyDelete
    Replies
    1. Hi Shridhar,
      For home use i will recommend Skil 5301 it is value for money proposition.

      Delete
  5. Thanks Apoorv. which software did you used for SketchUp Plans for TV unit? its awesome and very technical sketch. R u graduated BE Mech / Industrial Production?

    ReplyDelete
    Replies
    1. You have answered your own question software name is SketchUp :)
      I am a B.Tech CS. Degree has nothing to do with what i do.
      Its all about passion.

      Delete