Thứ Tư, 1 tháng 8, 2012

Làm đẹp nhà với khung tranh gỗ treo bằng ghim đóng tường

Không cần đầu tư quá nhiều tiền hay chọn lựa quá cầu kỳ, những khung tranh gỗ xinh xắn được sắp xếp, trang trí cân đối, hài hòa cũng đủ mang lại sự ấm áp và phong cách cho ngôi nhà của bạn. Tuy nhiên, việc treo tranh thế nào để không làm ảnh hưởng đến những bức tường trong mỗi gian phòng là câu hỏi khiến không ít người lo lắng.

Trước băn khoăn đó thì ghim đóng tường là một giải pháp khá lý tưởng. Mỗi chiếc ghim đóng tường có 4 đinh nhỏ nhọn chỉ dài khoảng 1cm. Khi muốn treo tranh, bạn chỉ cần xác định vị trí rồi đóng 4 chiếc ghim lên tường qua một tờ giấy, Sau đó bóc tờ giấy ra là bạn có ngay 4 móc chắc chắn để cố định bức tranh cần treo. Ưu điểm lớn nhất của loại ghim này là khi treo tranh bạn không cần dùng khoan, chỉ với một bước nhanh gọn là bạn đã có thể treo ngay những bức tranh sinh động làm đẹp cho không gian. Và khi muốn thay đổi vị trí của khung tranh thì những chiếc lỗ bé xíu trên tường cũng không làm mất đi thẩm mỹ của ngôi nhà.

Cùng Dothi.net ngắm những khung tranh gỗ đẹp lung linh treo bằng ghim nhỏ tiện lợi:
Phòng khách trở nên ấn tượng hơn với những chiếc khung tranh gỗ nhỏ xinh.

Màu của khung tranh gỗ cũng cần phải được lựa kỹ lưỡng phù hợp với màu sơn của tường và cách bài trí nội thất trong phòng.


Khung tranh gỗ có thể sắp xếp theo nhiều cách khác nhau để tạo điểm nhấn cho không gian.








Sự pha trộn giữa các khung tranh có màu sắc khác nhau cũng tạo nên nét độc đáo cho mỗi không gian







Những khung tranh làm từ gỗ tự nhiên luôn là sự lựa chọn hàng đầu bởi chất liệu gỗ phù hợp với mọi không gian.



Khung ảnh - Không khó để có một món quà


Cách làm đơn giản lắm, chỉ cần khéo tay một chút là mình đã có một món quà tặng bạn bè rùi!
Chuẩn bị những nguyên liệu sau:
- Giấy bìa xốp (còn gọi là giấy mô hình) dày 0.5cm và 0.3cm
- Giấy bóng kính
 - Cái bấm lỗ, kẹp nhíp
- Sơn xịt ATM
- Keo sữa, dao rọc giấy, thước, bút chì, kéo
Vật liệu hơi khó mua là giấy mô hình, các bạn có thể mua tại Tí Phước (đường Nguyễn Đình Chiểu), Art Friend (đường Lê Thị Riêng) tại Tp. Hồ Chí Minh và tại cửa hàng bán dụng cụ Mỹ Thuật ở ngõ cạnh trường Xây Dựng, HN. Còn các thứ khác có thể tìm thấy dễ dàng trong các quầy văn phòng phẩm.
Đến phần hành động này:
 
 
 
Bước 1:
 
 
- Dùng dao cắt 2 hình vuông cạnh 10 cm -  miếng dày 0.3 cm làm mặt trước, miếng dày 0.5 cm làm mặt sau. Miếng bìa dùng làm mặt trước của khung hình tất nhiên phải cắt bỏ phần giữa rồi (8x8 cm).
 
Bước 2:
 
 
- Cắt 4 rìa cạnh của miếng bìa dùng làm mặt sau, ta được 4 thanh ngắn dày khoảng 0.8cm (đều tay nhé các bạn, nếu ko sau này sẽ khó khăn khi lắp vào đấy)
 
Bước 3:
 
 
- Quét keo sữa và dán 4 thanh đó vào sau lưng miếng bìa dùng làm mặt trước của khung hình.
 
Bước 4:
 
 
- Ướm thử miếng bìa mặt sau, nếu hơi khó khi lắp vào ta có thể cắt bớt cạnh 1 chút nhưng đừng cắt nhiều quá sẽ bị lỏng.
 
 
 
 
 
Bước 5:
 
 
- Cắt giấy bóng kính vừa với miếng mặt sau của khhung hình, kích cỡ 9 x 9 cm.
 
 
 
Bước 6:
 
 
- Xịt sơn màu vàng cho mặt trước khung hình.
 
Bước 7:
 
 
- Dùng cái bấm lỗ bấm giấy màu đen và trắng, dán lên khung hình bằng keo sữa.
Một chiếc khung hình xinh xắn kết hợp "rất thân" với những tấm ảnh chan chứa tình cảm gia đình bè bạn đấy! Chúc bạn thành công với món quà tặng này của Kênh14 nhé!
 
Đơn giản, nhẹ nhàng
 
Chỉ để ở một góc nhưng đủ bừng sáng một căn phòng... 
 
 
Bạn cũng có thể chỉ cần đeo một chiếc nơ lên cho khung hình cũng xinh cực í!
 
Với một bộ khung để bàn như thế này, bạn bè và gia đình sẽ luôn ở bên bạn trong cả khó khăn, hoạn nạn...
 
Thực hiện: Thu Vân

Chủ Nhật, 29 tháng 7, 2012

Spiral Coffee Table


Intro:
    
Welcome to the Spiral Coffee table Instructable. I hope you will enjoy reading this Instructable as much as I did in creating it.  I will also be providing all of the files and formulas used in the construction. Any customization of the table is welcome. Now, lets start off with the purpose and goals in making this project.

Purpose:
     The purpose of this design is to make a visually appealing and structurally sound coffee table.

Goals:
     
Several main goals existed in this project:
       1)  To illustrate the steps of starting conceptually from a conceptual idea appealing furniture.
       2)  To utilize CAD for precise dimensions and assembly fluidity.
       3)  Create tooling that was easy to use for repeatable results.
       4)  Compare a Virtual-created model to Physical result.

Safety:
Power tools ,woodworking and stain/paints are used for this project, so please, use safety-glasses and gloves when appropriate.

Now comes the brainstorming the concept of the table.

Step 1Conceptual Design and Equations

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Eqn Drawing 1.JPGEquation Capture.JPG
Concept: 
    I started off on this project deciding on what would be a handsome table and was interesting from the top down-design. I choose the spiral design of the legs. I then had to support the structure, so I had designed each leg be supported by the previous, as well as an optional base for additional support.

Trigonometry:
     
Coming up with an initial design wasn't too hard. However making an appeasing twist and correct height involves some trigonometry. The major factor of this table was the side length. An easily measured length was one driving fator(round numbers are nice!)
     1)  The projected length (c)  and side length (l) were used to find a suitable height for a coffee table (around 19" high)
     2)  Since the average coffee table is around 20" in height, choosing the correct lengths and angles were important in make an attractive table
     3) A Law of Cosines and a Pythagorean theorem later, and I had a useful formula to implement in the CAD software.
   
Next up, CAD:

Step 2CAD Modeling Steps

Creating the Base:
    To make the CAD model, I used CATIA. The steps are as follows:

       1)  A starting point was created. The second point's sketch plane and the height were controlled through the formulas and created parameters (Also known as Knowledgeware in CATIA). Picture 2
       2)  A line connecting the points was then rotated around a central axis. This allowed for the central placement of each arm as well as giving a quick preview of the base design. Picture 3
       3)  After some adjusting, I settled on 15 arms for the table, they are aesthetically to me attractive as well as more natural-looking.
       4)  A rounded rectangle was padded to get the general arm shape.
       5)  For the arms to be more stable, a notch was created on each arm to lay normal (they lean on one another).
       6) This was made via a pocket on a normal plane of the line previous to the pad. Picture 4, 5, 7
       7)  The tooling/base was created after projecting the arms onto a disk, and adding some tolerance around the part (so the arms can fit) and then pocketing the sketch.
       8)  The pocket was also patterned, and a hole removed the inner-part of the ring. Picture 6
       8)  The glass top was made just as as simple pad with two chamfers on it (AKA a Bevels).
       9)  The final step in creating the CAD model is the assembly, to make sure the to assemble the parts and check if any clashes (collisions of the parts) are present.

To make my assembly and each iteration of the base go together efficiently, global parameters were set-up at the assembly level that all of my parts used. It makes any change I make happen assembly-wide to make modifying the document MUCH easier.

Drawing Class.
The next step is the Drafting/ Tooling steps as well as working drawings. These make creating the physical part a breeze.

Step 3Tooling and Working Views

Tooling:
    One of the most vital things in this project is tooling. To make all of the parts, I am including drafted the plans for showing the accurate placement of the bottom tooling and notches. I also included the formats of: CatDrawing,  PDF (for printing even if you don't have CAD software) and DXF of the base for laser cutting. All of the other tooling/drawings can be sized to fit when printing.

Files:
    The files included are:
Technical Views- These are the dimensions for correctly positioning the notch on the arms,
Tooling- This drawing includes the necessary tooling to position the cutouts on the bottom bracer.
Tooling_Continued- Since Measuring an accurate 24 degrees (360/15 degrees) to space the holes on the bottom of the brace, I am including a template to make this easy.
Tooling_1- The include the notch templates on an 8.5X11 in sized paper for printing ease

All of the other tooling can be sized to fit when printing.

Now, it's just about to get real...

Step 4Let's Get Physical

    While all this talk of designing a table using a computer and mathematics is fine and dandy, I feel as though actual proof is required to show if a design is up to snuff.

From start-to-finish, this project should take around 1.5 days or a weekend. It can be a one person project, but friends to help are always nice! Here is a list of Everything needed to make the table.

Required Tools:
-Table Saw
-Jig Saw
-Drill (with a bit large enough to fit the jig-saw blade through, your judgement, I used 3/16 in bit)
-Chisel
-Scissors
-Sandpaper- rough (75) to fine-(300) grits
-Straight-edge/Ruler
-Level
-Pencil
-Clamps

Required Materials:
- 36" x ~18" x 1" sheet of the wood of your choice (preferably hardwood)  for the arms.
-18" x 18" x 1"  sheet of wood the base
- 20" x 20"  sheet of the material that will be the top surface
- 1 bottle of Wood Glue or equivalent adhesive
- Tape (scotch, electric)
- Scrap wood pieces

Optional:
- 1 can of Spray Paint, Stain or Clear-coat
- Rubber mallet
- Willing friend to help
-  Any Heavy weighted object (ie. bricks, textbooks, "willing" house-cat (not really))
- Glass would be the best material for the top of the table, but as a student, I'm on a limited budget so wood was my choice.


Helpful Tip:
Before heading out to the workshop or garage, print off the Tooling and Tooling_Continued PDF documents from the previous step and take them with you to save trips.

Step 5First Base

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First,  let's start with the base tooling of the table. I used pine, this is definitely not the suitable wood for quality furniture, but resources are limited in college. Pine shows also that the table can still be created and sturdy, even with the inferior wood. Anyone who has the laser cutter and is using the DXF can ignore this step and move on.
Time: 20-40 min

1)  On the ~18" x 18" sheet, find and mark the center in both directions.
2)  Cut out the radial lines of the Tooling_Continued.PDF.
        a) Poke a small hole in the center of the radial lines.
        b) Align the center of the tooling to the mark on the wood.
        c) Tape down the cut-out.

3)  (15x) Extend the radial lines out to the edges of the sheet using a straightedge or ruler. Picture 2
4)  (15x) With the ruler, make a mark 7.5 in from the center of the radial spacing tooling.
5) Cut out the radial line tooling from the Tooling.PDF.
Cut close to the angled slot graphic Picture 3
        a) Extend the radial line on the cut-out to the end of the slot graphic. Picture 3
        b) Poke a hole in the .25 in from the back of the tooling, along the radial line. Picture 3
        c) (15x) Align the hole on the radial line tooling and trace the outline of the slot graphic. Picture 4

 6) (15x) Drill holes at the marked locations with the bit (drill a pilot hole if necessary). Picture 5

Next comes all of the cutting/sawing in the project. Stopping at this point for now and cutting everything at once should minimize the amount of clean-up required.

Step 6Do You Want to Play a Game?

Please, use Safety Glasses for this step
Time: 45-60 min*

On the Table Saw:

  1) (15x) With the 36" x 18" piece of wood, rip the pieces of the wood into 5/8 inch strips. Picture 2
  2) (15x) Rip the strips a second time to get the square side pieces. Picture 3

*Using the Chisel/Dremel:
  1) (15x) Position the Side tooling from the Tooling_1.PDF , by the dimensions on theTechnical_Views.PDF .
  2) (15x) Sketch the Top and Side profiles in the respective locations.
  3) (15x) Take the carving tool of your choice and start.

  I realize that carving the notch can be rather challenging. The flat surface will provide a solid surface for the glue to adhere to, provide an even sturdier table and a more professional result. The table isstill strong enough if one chooses to skip this step. So I will be showing pictures of the table with the notch not included for those unable to complete this step.

With the **Jig Saw:

  1)  Cut out the sketched outlines on the 18" x 18" base
  2) Take your time, fit the side pieces into the cut-out to see how they fit tight.
  3) Enlarge with the jig saw or sandpaper the cut-out if the side pieces are too tight (no more than a mallet love-tap should ever be required)
  4) If you are going to use the base tooling as part of the table, cut out the preferred radii, do not cut any closer than 1 in to the sketched outlines to insure the base holds during assembly.

Now we are ready for the gluing, and to see this pile of sticks come to life.
* The time was determined by skipping this step.
** Anyone who has a laser cutter can use the DXF file and make the base.

Step 7Bonding Together

2012-03-17 15.25.16.jpg
Notch Orientation.PNG2012-03-17 15.29.35.jpg
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Now that everything has been cut, it's time to move on to assembling the sides. The assembly is getting glued upside-down into the base
Time: Overnight, (8+ hours)

Assembling
1) Slide the side-pieces into the slots, each piece is slid under the previous one placed.
    *For those who made the notches, the correct orientation from Picture 1 is shown in Picture 2
2) Tap with the mallet (if needed), the pieces flush to the ground.
3) At this point the pieces should be free-standing in the tooling.
4) Carefully flip the stand over. Picture 4
5) Level, the base with the ground in all directions. (Since I was using pine as the base, some polite persuasion with a brick was needed to make my slightly warped boards level)
6) Space the arms of the base evenly with any spare wood Picture 4, 6

Gluing 
To make this assembly permanent, the wood-glue of your choice is needed.

1) Pour the glue into a cup
2) Apply to every side touching wood with a thin piece of wood (a cable tie worked good for me).
3) Clean up any drips that occur, this will make sanding easier.
4) Wrap the middle section with electrical tape. This is to make sure that each arm has even pressure bonding it together.
5) Wipe up any remaining drip 30 minutes after then wait for the glue to cure overnight.

So close,  you're almost done!

Step 8Finish Line

    Hopefully, you're refreshed from the previous steps, because the final product involves some sanding as well as painting. First things first, if you want to remove the base form the tooling, use the mallet and gently tap arms out. To do this gently, tap the arms out .25 in sequentially around base until loose.

With the rough-grit sandpaper:

1) Round the edges off of the on the top and bottom of the base Picture 2, 3  This helps ensure that any high-point on the arms is now flush to the table.
2) Sand flush any glue that could have run down the legs and dried.
3)  Also sand all of the exposed wood roughly.

With the fine-grit sandpaper

1)  Mark every side lightly with a pencil. Picture 4
2) Sand the marks of the pencil away. This will help you to know all of the surface is has the proper amount of sanding done on each side.

Now that the base is smooth, vacuum or blow off the base to remove any wood dust.Apply any finishing touches to the base. In the pictures, I used satin-black paint for my base.

As the last step apply the top of your choice, if the top is glass or some other slick surface Bumpons from 3M or something similar, will hold the top in it's place.

That's it, your done, enjoy your unique spiral in your house. I used pine and no notches and the table was still strong enough. This way the design can be built successfully if you want to skip the carving and/or use lower quality wood. These decisions depend on how high-quality one wants to go in building the table

*If anyone want's a custom size of table, I would be happy to modify the working drawings and send them. Also, included are the CATIA model of the whole assembly as well as STL and STP files for importing in other 3d programs.
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