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How to build curtail entry step


We have already discussed types and design peculiarities of entry steps in the section Staircase Entry Step. As you already know the entry step can immediately refine any stairs. All of them have their constructional features, but all of them also have one common detail, that is a riser rounded on one or on both sides. In general, everything is easy as far as the manufacture of the tread is concerned - at first the pattern is affixed onto a work piece. Then the tread is cut along the counter, and its sides are processed with the help of a router.
Complications may arise by making a riser. It is not so easy to curve wood at home. So let's find out how make a riser for Double Curtail Entry Step yourself.

 

 

 

 

 

In order to make a radius riser for Double Curtail Entry Step we need plywood 12 to 14 cm thick, two strips of veneer of the same species as you used for the stairway construction, glue and cramps. If you plan to paint the staircase, you need no veneer.
At first you have to cut a
plywood of the width equal to the height of a riser in the flight of stairs (don't forget to add the size of lead-in to the riser height). The length of the strip can be calculated if you sum flat and radius sections, and add 150 to 200 mm after the end of the radius. The formula of calculation of circumference is ะก=2πr. The presence of flat sections at the ends of radius sections allows us to make the shape of rounding regular. Later on, if these flat sections hinder by assembling, you can cut them a little.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Fig. Plywood strip

On both sides of plywood you must glue veneer of the same species as you used for construction of the flight. Try to choose veneer 1 to 2 mm thick and with straight-grained texture. Apply a layer of glue on the previously ground and dust-free surface, and lay veneer strips above it on both sides. Then on both sides above the veneer additional strips of plywood or wood are applied. They are used to press the veneer to plywood. Now everything is cramped together with high effort. You may put small pieces of plywood or wood under the top part of cramps and under the screws, to avoid wood punching by metal. If dips of glue appeared at the edges after veneer cramping, they should be immediately removed. It is necessary to coat both sides of plywood strip to reduce internal stresses after drying.
Veneer shall be glued if you plan to apply transparent lacquer on the stairs.
If you plan to paint your stairs, this stage may be omitted.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. Plywood strip and glued veneer


After thorough drying of glue you shall make two longitudinal slots along the entire strip, their width being equal to the width of plywood, and their depth being equal to the half of plywood thickness, at the distance from the edge equal to the thickness of plywood used.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. Longitudinal slots in plywood

 

 

 

 

 


Then crosscut the radius sections, but take care not to damage the last layer of plywood thereby.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. Crosscut slots in plywood


Now it is required to cut out two accessory parts in the shape of half-ring with slightly elongated lateral. As you already know from the section How to build stairs, tread nosing of at least 30 mm shall necessarily be executed for all treads in the flight. This requirement also relates to the Double Curtail Entry Step. The radius of lateral rounding of the riser shall be minimum 30 mm less than the radius of rounding of the Double Curtail Entry Step. The radius of the detail we have to manufacture shall have the following value
(R tread -- 30 mm) -- (thickness of the last layer of
plywood + thickness of the scale veneer) = R detail

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



Fig. Detail in the shape of half-ring


Then, two more accessory parts of veneer is required to produce but in the shape of half-circle. Their radius shall be equal to
(R tread -- 30 mm) -- thickness of all layers of veneer = R detail

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Fig. Detail in the shape of half-circle


Now, when everything is ready, we can proceed to assembling of the riser for the Double Curtail Entry Step. For this purpose the longitudinal slots on the plywood shall be extensively glued in the place where it is planned to install the details in the shape of half-ring with slightly elongated lateral. The details are slotted in. Extreme parts of the strip shall be very carefully turned around the details so that they can enter the slot tightly. It is essential to use cramps for fixation. Do not forget to put small pieces of plywood or wood under the top part of cramps and under the bottom screw.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. Gluing of the riser for the Double Curtail Entry Step, Step 1

 

After thorough drying the next two accessory parts in the shape of half-circle are glued above the first two details. It allows us to expand the bearing area for the Double Curtail Entry Step, and to substantially expand the gluing area. Use cramps for fixation of details again.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. Gluing of the riser for the Double Curtail Entry Step, Step 2


After thorough drying, grind off the front of the riser.

Now the riser for the Double Curtail Entry Step is ready for installation.


In exactly the same way the riser for the Curtail Entry Step, Bullnose Step, Single Double Depth Curtail Step, and Double Double Depth Curtail Step is manufactured.

The load taken by handrails will be transmitted to entry newel posts, which in their turn will be fastened on the Double Curtail Entry Step. That is why the Double Curtail Entry Step shall necessarily be properly fastened to closed strings or open strings, and if possible, to the floor on both sides.


To fasten the newel post to the Double Curtail Entry Step you may fasten a piece of wooden batten between the accessory parts with the help of glue and screws. Make sure that the batten is located in the assumed place of the newel post fastening.


To fix a solid post you can use a metal pin which is twisted into a piece of wooden batten by its bottom part. The newel post is placed on top of it and pressed by a nut.

 

Fig. Solid newel post fastening to the Double Curtail Entry Step


To fasten a hollow newel post a metal stud pin can be used.

 

Fig. Hollow newel post fastening to the Double Curtail Entry Step

 

Related Content :

- Stairs Models

- Stairs Types

- How to build Stairs