NTN – 600 Hull Rigging – Part XXI

Yesterday, I messed up the front plate. I had drawn the whole thing in SketchUp, and cut and drilled (one wrong hole, fixed with epoxy putty) the aluminum front plate for the motor bolts couple of days ago.





I will drill the front holes on the side brackets such that, when they’re placed among the wooden rails in the hull, they’ll be right in the middle of the slots cut in the front plate, allowing for 3.8 mm motion to each side.

I will start working on the new front plate, soon.

Recommended Firefox Plugin – Open in Browser 1.5

If your Firefox fails to open text files, such as C code, as text files, this plug-in is pretty handy.

Open in Browser 1.15

Open MenuNo more waiting for some IDE or text editor to open on-line codes or other annoying stuff.

I normally use GKrellM plug-in GkrellShoot to get screenshots on my Awesome WM, and it uses ImageMagic to grab the screen. I didn’t know it could not grab open menus (and I was too lazy to find a way to do it with it), so I moved on to GIMP (File -> Create -> Screenshot), which did a great job.

NTN – 600 Hull Rigging – Part XX

I started working on the boat again, after a long break. After squaring my wise again, and also squaring the bottom of the rotary table, I’m back to working on the mill. I placed them both, side by side, on the table this time. Since the table can handle 55 kg, I think it’ll be fine. The weigh about 35 kg, including the 3-jaw chuck (which I need to center on the rotary table, using a piece my friend Murat is making for me on his lathe).

Last weekend, I got some metal parts (I didn’t even look to see what they were) from a hardware store, which seemed suitable for the motor side brackets. They were thick and tough, yet light. So, I got about 5 of them.

New Bracket Metal

Steel metal part, suitable to be used as a side bracket.

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Rotary Table and Electronic Controller

Ok, it’s been a while. We are in a new year, (sarcastic) yaaaay. But at least we have a 4 (minus 2 already) day break ’til Monday, yet I don’t feel very productive. I still did a couple of things in the shop, in the past week.

I worked on the aforementioned rotary table controller, played with the rotary table and the 125 mm manufacturing chuck I got for it, and I still need to finish the boat! It snowed a bit lately, and we’re expecting more. I want more…

Rotary Table Lay

Rotary table without the chuck on it.

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BF20L motor brushes, Links, and Purchases

Yes, it’s been a lazy week at the shop (not at work). I got my motor brushes yesterday, though. And the mill now runs better than ever. The first time I ran the motor (at the lowest speed), there was a periodic ringing sound, and I could tell it was some sheet metal hitting some other metal (cooling fan?). We (Pamir and I) opened the motor only, and this time I removed the can (naively, I had thought it was somehow mounted to the bottom, but it was the magnets), and I was right, the cooling fan was warped. I fixed the blades with my hands and a flat head screwdriver, and closed back the motor. I, of course, had to reinstall the motor brushes.

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Optimum BF20L Motor Brush Problems

As I wrote in my previous posts, the brushes of the motor are gone, and I need to get a pair or more soon. So, I decided to remove the motor in the mean time. Here are some pictures of the motor and the mill during the disassembling process.

Motor Off Top

Top of the mill after I removed the motor and cleaned the grease with break pad cleaner.

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8 x 8 Laser Matrix for Fun – Part I

As I decided to replace the metal brackets for the motor mount, and didn’t have the proper parts, I worked on another project last week. I got some 1.5 mm stainless steel sheet today, though. I also got a new dial indicator, since Pamir knocked over and broke the one I got last night (It’s ok, it wasn’t no Mitutoyo anyway. I could have also turned the base magnet on to avoid it).

Stainless Steel

1.5 mm thick stainless steel sheet with 50 mm x 1000 mm size.

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