8 years ago So,  I made a 40% CO for the refractor. The "Work From Home" Solid Oak & Pine Kitchen Table. Certain bends and angles need to be made so that the conduit and wiring can fit through narrow spaces. I used aluminum flashing material to make an 18" long dew shield for an 8" SCT.

Make sure you do not roll the metal off the machine. like it, printer roller came from a dot matrix printer? Some report seeing festoons, and lampoons and bassoons and swirls and wisps, knots... with a 2.6" lens!

Lay out where you want the bottom rollers. Give the top screw another 1/4 to 1/2 turn 3. Cost $ Skill Level Start to Finish < ½ Day. Styrene rod may work as long as strength isn't a concern, it can be glued with plastic cement. That will give me a 25% CO - which Harold suiter says is still good.

If I did this again, I would have made a few changes. First, I would have used bushings in each of the holes for the roller cores. This is not exact but it should provide you with a reasonable estimate of the difference a 5% change makes.

The aluminum actually cost more than the steel which surprised me. Use the handle to roll the piece of flat metal passed the middle roller.

Start by rolling a conduit holder to a circle that the end of the bolt will fit in. 7 years ago

Welder Aluminum is easy to work but it can't be soldered, the solder just doesn't stick to it. Cut a 9 and ½ inch and 4 inch piece of flat metal (your long piece may differ in size depending on the size of your bottom roller). it can be fussy work, but it is cheap and doable with patience. To create this article, volunteer authors worked to edit and improve it over time. Cut a 9 and ½ inch and 4 inch piece of flat metal (your long piece may differ in size depending on the size of your bottom roller). You most likely don't need to heat the metal at all. Another way of bending small diameter tubing into circles is to fill the tube with a supporting material that is either left in the tubing ( like bitumen) or is removed once the bending process is complete.Water, ice salt and sand are other materials that are successfully used.. A mixture of bismuth, lead, tin and cadmium which is commercially available and is called Cerrobend, works very well to bend small diameter tubing into virtually any shape.It melts at about 70 C ( 158 °F) and when rapidly chilled, one will get a very fine-grained structure, meaning that it is very ductile. Slide the bolt through the top, and tighten the nut on the bottom, so you can braise the nut to the bottom of the flat metal. Mark the bend point at 2 and ½ inches with a chisel, and bend both sides of the holder down using a piece of 2x4 to help keep the bend even.  3       Printer rollers removed from old printers 5 years ago

@ MoustacheCat : I take offense on that!! This instructable will show you how to make a metal roller out of old printer rollers and some angle iron. To attach the top bolt holder you first cut a piece of C-Channel and a piece of flat metal the length of your 3rd roller holder. This is more of a slip roller than a metal bender since the object of this unit is to roll the metal into a curve. on Step 4.

https://www.youtube.com/watch?v=TxpW8anyu3U, https://www.youtube.com/watch?v=x5l6cxz0G8k, https://breakingmuscle.com/fitness/feats-of-strength-how-to-bend-a-nail-in-half, https://www.youtube.com/watch?v=hL8xoK__-Z4, http://www.davidhorne-gripmaster.com/dubending.html, http://www.legendarystrength.com/articles/bending-nails-for-fun-and-strength/, https://www.youtube.com/watch?v=9wncSMBnJow, consider supporting our work with a contribution to wikiHow. Braise some rebar or other scrap metal to give you some leverage, and attach the handle with some finishing nails to fill the hole and get a tight fit. have a nice weekend, everyone, steve, Answer There you go…  Hope this was helpful, and will get you started on your own metal bender or other fun project. Of course, at that size, perhaps solid plastic fishing line that fit closely inside the tube would be sufficient to keep the tube from collapsing.

Every day at wikiHow, we work hard to give you access to instructions and information that will help you live a better life, whether it's keeping you safer, healthier, or improving your well-being. I'm a big fan of Atomic Zombie's builds. won't need sand if it's rod.... No, does not need to be tube.

does it absolutely need to be tube?

Regular practice bending steel, done correctly, can not only improve your wrist and hand strength, but also improve your overall body strength. Note this is true when doing a large radius bend in relation to the thickness of the metal.

I mean like the edge of the belts are in focus and jagged with some interior things happening.

Once the shape is as you want, the seals can be removed, the sand poured out, and the ends trimmed so they can be made flush, and tweaked on the form to remove the slight helix due to the previously overlapped ends. Repeat steps 2 and 3 twisting the top screw and rolling the metal back and forth. The trick lies in having the proper flux and rod to match.

You only want the roller with its metal bar core.

References.

that doesn't happen here, so I don't if the optics are mediocre, or seeing isn't always good enough or what.

Borrow someone's pipe bender (check your local tool library). I wouldn't have figured that out. Next, take the first bottom rail and place it on your work area. dmn, that's pretty clever. on Step 6, Reply

I'll make a 1.5" (25% CO) disk and tape it on the secondary stem during a Jupiter session and see if I notice anything - which I doubt I will. Thanks.

The hand further from your body grips the bar in an overhand grip, while the closer hand grips the bar underhanded.

In this case I am using 4 mm stainless steel rod and the silver tubing has been drawn down to fit as tightly as possible.  1       Conduit pipe holder  1       3 ft piece of ¼ in C-Channel *If* however, you are cleverly building lugs and then brazing Cr-Mo into the joints, that's another story altogether. I was thinking I'd make the bender, then use it to make large diameter tubes from sheet metal from old microwaves, and use those tubes for a downdraft gasifier.

Personally I think it's an overblown concern.

This should place it just inside one of the bottom roller holes. Bend Metal Without Expensive Tools: UPDATE:Check out this super two-person trike my partner and I are offering on Kickstarter! 6 months ago. Now is also a good time to drill a hole in each of the roller’s metal core for a cotter pin (finishing nail) to keep them in place.

The tubes are 3/32" diameter. considering mild steel tubing not so much like a heavier gauge piece of mild steel. I was just about to make some calls and I figured - all this for 3/4 of an inch difference?

Diameter of the tube is crucial for scale is all. The bolt should easily screw up and down after you are done. on Step 10, That is a nice handy tool and a very good inscrutable.

The aluminum actually cost more than the steel which surprised me. I buy steel tube in 20 feet sections. I ended up using the handle from a tap and die set. Is there any technique or trick that is good for doing this, anyone might be aware of? Don’t make it too tight so the rollers can easily move, or too loose that they fall out. For each riser, you need to cut one side of the 1x1 angle iron to ½ inch wide.

if you bend too soon, you'll bend the metal, and likely have to start over on the other side.

The rollers should be close in size, but do not have to be the exact same size.

The further hand provides more of the bending force, while the thumb and forefinger of the near hand serve as a fulcrum. 4. Cordura is initially stiff, but becomes more supple over time as it absorbs the oils from your skin. They may fit the roller shaft.Thanks, Reply Click the link to receive your free PDF version of this tutorial on How to Bend Tubing into a Circle, which will be emailed to you within 4 - 12 hours. A solid rod would be much easier to bend, not having to worry about tube flattening, kinking, or collapsing. Have you used a cheater bar inserted in the tube? As you will see in step 10 “Next Time” I made a few errors on this one, but I finished with all my fingers and toes intact.

Got everything in order on the tube, added a heavy pipe mount and finally a Meade field tripod.

Metal saw Amazing tool use for bending steel bar. Take apart the old printers until you are left with just the printer roller. If the rollers or their metal core are not the same size, the holes will not be lined up even on the bottom rail. Aluminum can be brazed or welded but it requires extra equipment and some know-how (neither of which I have).