Hi bro bakman,

Is it just going to be a piece that you will bend or....... you will be needing more?

Hi Sir Rosy...I need a JIG for 12 pcs Steel Circles...these would be base for floral stand ...may nag order sa akin ng 12 pcs floral stand...this is my first order.hehehe...pls help me sir rosy I saw what you did sa gate mu making jigs for spirals..using square bars...kaso sa akin is Steel circle with 1 foot diameter using a 14mm round bar...this could be hard to bend.... I just imagine...

what can you suggest sir...

First make a 12-inch "mold". Similar to what rosy made here:

If you don't have the round piece lying around conveniently, you can make your own round mold by hammering a flat bar (of the appropriate thickness) to shape. Probably easier to do it in segments instead of the whole circle in one go.

Then make an F-shaped bender bar like this:

Use the bender bar to wrap your round bar around the mold

Thanks Sir Joey...does a 3/8 flat bar can do the job?

Sir ask ko lang do I need to fire the 12mm round bar to soften the metal for bending...?

3/8" is overkill, IMHO. I think something in between 1/8" and 1/4" will do. Just weld it firmly to the base plate of your mold.

No need to heat the 12mm. Construction workers bend 16mm bars all the time without heating. I'm assuming of course your 12mm bar is mild steel.

Keep in mind that the longer the handle of your F-bender, the easier the it is to bend.

@ bakman,

Here is my idea on the jig, hope you can buy a metal plate with 1/4" or 3/8" thickness and about 16" X 16" square, this will be your base plate jig.
Then on the plate, find the center and then draw or make a circular outline of 12" in diameter, set it aside, then cut some/several pieces of 12 mm or 16 mm steel bars at about 2" or 4" in length. purpose of these pcs is that you will weld these around the marked circle spaced at about 2.5 inches apart until the whole outline is filled. This is another option with regards to bro joey's suggestion of getting a thick flat bar and hammering it to get the diameter size you will need.

With regards to bending the round metal on the jig, I simply use a long 3/4'' GI pipe inserting the 16 mm inside then moving it little by little as the metal is being bent. Make sure your jig is well secured/clamped on something so it will not move or rotate with you.

I have a question, the 12" diameter you mentioned, is it the inside of the rounded steel bar or the over all exterior part of the 16 mm ? I am asking this cause you may need to adjust welding those small pieces of metal on the base plate to get the required diameter.

Sir Rosy

I draw to confirm your suggestion...please check if this is what you mean...

Yes bro bakman, that is exactly what I was trying to convey. But I thought you will be bending 16 mm round bars. Actually this idea is just a very simple improvise, if only you can find or make a circular die yourself pero mas matatagalan pa so I guess this will do just fine. I think this will be faster and easier to do than getting a flat bar, hammering little by little and forming it to make a circle of 12" in diameter.

Anyway I forgot to mention to not to cut your round bars immediately to the exact length agad, it has to be, shall we say extra long enough which you can finish or make 3 pcs at para hindi ka kapusin sa bakal habang ibini bend mo ang round bars.

I hope this idea will work for you.

Thanks Sir Rosy....

Hi Sir Rosy,

This is the one...similar to this I will make soon...

OK bro, thanks for sharing !! :clap1::thumbup:

rosy, I think your approach is better considering only 12 pcs will be made. Hiowever, for significantly bigger quantities I think there might be problems.

The pegs bear the bending force individually, It might give way after so many units. And the GI pipe needs a significant length of the 12mm bar to be inserted inside. Meaning you cannot pre-cut the stock to exact length, which is desirable for mass production. The F-bender does not require extra lenght of stock. But it does need a continuous (flat bar) mold/pattern.

BTW, the mold/pattern does not have to be a full circle. Half-circle (or less) will already do. Put in the workpiece, bend some, move the workpiece counter-clockwise (based on bakman's diagram), bend some more. Repeat until you get a full circle.

Thanks sir joey...i am also considering your opinion esp that I am still a new be, I love to try things...so I guess I will try both yours and sir Rosy...anyway this is not my only project taht requires bending circles... I plan to make a quarter side only of the circumference and weld it to my table...will see how it goes later...Bend some ...move .....bend some more...and of course with the F - bender...

by the way Sir Joey and Sir Rosy please help me about my compressor drain plug problem...I post some pictures on a different thread....

rosy, I think your approach is better considering only 12 pcs will be made. Hiowever, for significantly bigger quantities I think there might be problems.

The pegs bear the bending force individually, It might give way after so many units. And the GI pipe needs a significant length of the 12mm bar to be inserted inside. Meaning you cannot pre-cut the stock to exact length, which is desirable for mass production. The F-bender does not require extra lenght of stock. But it does need a continuous (flat bar) mold/pattern.

BTW, the mold/pattern does not have to be a full circle. Half-circle (or less) will already do. Put in the workpiece, bend some, move the workpiece counter-clockwise (based on bakman's diagram), bend some more. Repeat until you get a full circle.

Bro joey & bakman,

The metal pegs will not have a problem if its imbbeded in drilled holes on the metal plate and then properly welded. I was assuming 16 mm round bars are to be made into circles but if 12 mm will be used, so much the better, its easier to bend. But for mass production, I will fabricate first a permanent die where I can easily put my stock, bend and produce this circles. With regards to the use of the F-Bender, I think it will be good only for smaller size of round bars though I haven't used one yet.

With regards to the 3rd paragraph, yes the half circle will do but since bro bakman says he is new to this, it will be easier for him to visualize making that circle if the metal pegs are in full circle. There will be lots of bending, clamping( using several vise grips ) and hammering with each circle made so be ready with the necessary tools.

If you have other better ideas then go for it. :whistle:

Good luck on the project !! :goodluck: