Convert a circular saw to table saw - 2

I have a skil circular saw. There are things that only a table saw can do and so I had tried to convert it into a table saw by mounting it underneath a plank of wood. My initial experiment was detailed in an intial post here   but I never really used that as it was too much of a problem to set up and not stable. I needed to go in for a more solid structure.
I used my old computer table that I was using as a work table. I had already drilled the holes in the circular saw. I marked the holes and drilled them. I routed a counter sink holes on the top.
I carefully marked out the place for the blade and routed a through hole through the table top. The next step was to fix the circular saw with nuts and bolts from the underneath.
My table is not straight. So when I need to make a cut I use a straight edge parallel to the blade. I have also routed a groove parallel to the blade that i am going to use for a cross cut jig.
The maximum theoretical cutting height is about 4 cm, less when I use a makeshift cross cut jig. If i want to extract more from the blade, I will have to thin down the top or make a special base plate that fits precisely
in the table.

The table is shown below in the place where I plan to do scroll sawing. I move it to a larger area for using the table saw.

I also plan to attach my router to this table to have one multi-function table. Not because I like the multi- function, but because of space constraints.

The work table with the circular saw attached. This can do some of the work of the table saw. The table is in the area for scroll saw work.

When the blade is lowered I use the table to fix the proxxon scroll saw as I have a space crunch.

Proxxon saw with vacuum attachment fixed over the retracted blade .

Circular saw fixed with bolts from the underneath. One hole was drilled too near the corner and needed washers.

The feed in area is too small, only about one foot. My next table top will have a larger feed in area

Circular saw fixed in with nuts and bolts

Counter sunk holes and the parallel groove (parallel to the blade)

Blade is perpendicular. Max cutting height  only 4 cm

Flexishaft

Flexishaft attachment for drill

This was a gift I received from my brother. It is a flexishaft attachment for a normal drill. Fixing it was a little counter intuitive as I feared that  the entire shaft would rotate. However it fits well into the normal drill and only the bit at the tip rotates.  I fixed it up on to my old drill. However I later plan to fix it on to an old grinding stone motor.

I find this very useful for sanding small curved pieces. The counter sink bit is a real bonus. There are lots of other stone bits. In short a fantastic tool to have. I plan to do some intarsia now that sanding has become quite easy.

Bosch GBH 2-18 RE Rotary Hammer Review

Why did I buy the drill
I had an old drill that I had bought for about Rs 900 or so. It was supposed to be an impact or 'hammer drill'. It served me well for its lifetime. Apart from the knobs slowly breaking, a problem I faced was that the drill would not progress through the wall. I tried all sorts of bits, even dipping the bit in water. However I soon realized that the problem was with my drill. It did serve me well for wood, but was not good enough for  good quality cement or concrete.

Types of drills.
From information I have gleaned over the net, there are three types of drills.
1. Normal/Rotary drills  : With just a motor.
2. Impact drills (sometimes called hammer drills or impact drills)
3. Rotary hammers

The price increases in that order. A normal drill can be got locally  for less than Rs 1000. Many are available as 'tool kits' which include the drill, and a lot of hand tools. Impact drills start near Rs 2000, and rotary hammers about 4500 or so and more.

Normal drills just rotate. Impact drills rotate, but the rotating thingy (not sure of the exact technical term) causes a small forward movement of the whole chuck at a very high rpm. In a rotary hammer the forward movment is by a piston. Often a rotary hammr requires a special bit such as an SDS plus bit. This bit can move forwards and backwards within the chuck. A rotary hammer is more powerful for drilling to concrete.

As I already had a drill that could drill through wood, I decided to go in for a rotary hammer. I decided that I had had enough of struggling to get through walls. In fact I used to shy away from drilling on the wall due to the difficulty. Skil has a rotary hammer drill 1715 which is available for about Rs 4300. This has three modes, drill, hammer + drill, and only hammer mode. I decided however to go in for the bosch GBH 2-18 RE as I thought this would be a good lifetime investment. I have skil tools but an not very happy with their precision. The bosch  drill does not have an "only hammer mode". The only hammer mode can be used to chip away tiles etc, something that I may only rarely do.

Purchase : From Mach Power tools Chennai. I was pleased with their prompt service. There was however a delay in the part of my local first flight courier office. I hope this is just a one off thing as my local courier has delivered well before

First impressions : 

Bosch GBH 2-18 RE Rotary Hammer box

A good box. The box reasonably robust and seems to suggest an intent to last as long as the drill it houses. IT is also spacious enough to keep the drill, drill bits, spare chucks as well as other items. Nicely compartmentalized. Now it may seem irrelevant to talk about a drill box, however these things really make a difference while working.

Bosch GBH 2-18 RE Rotary hammer

A nice long cable. I have not exactly measured it, but it is much longer than my earlier drill.

Drill stop : A good one. However care has to be taken while using the drill stop in the hammer drill  mode, as the drill bit moves forward by at least half an inch. This has to be taken into account.

SDS plus masonry bit

Use in concrete : A  breeze. Melts through all walls, pillars, cross beams. Yes just  as the song love portion number 9 says  :  I did not know if it was day or night. I started drilling every spot on sight... I tried out the wall, the concrete pillar, as well as a concrete cross beam over the window. It was very very easy, with no strain at all.

Chuck with SDS plus adapter

Use in wood :  A special SDS plus adapter  is needed for this. I purchased this separately. There was nothing great in its used in wood that sets it apart from other drills.

Final impressions. I think a rotary hammer is very useful tool to have. It simplifies making a hole in a wall. It can be used as a normal drill too. I wish it came with at least one SDS plus bit, but that will have to be bought separately.