Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Some Machining and Handtool Properties of Tetuya Koroi (albizia Odoratissima) Wood

Md. Ashaduzzaman Sarker
Wood Working and Timber Engineering Division, Bangladesh Forest Research Institute, GPO Box No. 273, Chattogram-4000, Bangladesh

Md. Nazmul Ahasan Mridha
Wood Working and Timber Engineering Division, Bangladesh Forest Research Institute, GPO Box No. 273, Chattogram-4000, Bangladesh

Md. Anisur Rahman
Wood Working and Timber Engineering Division, Bangladesh Forest Research Institute, GPO Box No. 273, Chattogram-4000, Bangladesh

Liton Kumer Sarker
Wood Working and Timber Engineering Division, Bangladesh Forest Research Institute, GPO Box No. 273, Chattogram-4000, Bangladesh

Abstract/ Executive Summary:

The study was conducted to determine the suitability of tetuya koroi (Albizia odoratissima) wood for furniture manufacturing i.e., planing, shaping, boring, mortising, turning, etc machining and handtool property tests of this species grown in south-east Bangladesh. The evaluation in both machining and handtool property tests was based on the frequency of the defect-free sample. Finishing property was also determined by implementing two types of polishing materials, viz.: carpa. The defects of the sample were estimated by visual and tactile observation. The percentage of defect-free samples was evaluated for each property operation and classified based on five quality grades. The study's findings mainly introduced good working properties, and tetuya koroi wood may be suitable for furniture. All properties exhibited 63 % to 76 % grade 1 and 95 % to 100 % qualified grade. The finishing property of this wood showed good quality as well.

Keywords: Planing, Shaping, Mortising, Turning, Carpa.

Location: Bangladesh Forest Research Institute, Chattogram

Start Date: 00-07-2019

End Date: 00-06-2020

Program Area: Conservation and Biodiversity

Commodity: Koroi

Objectives:

To determine different machining, handtool, and finishing properties and introduce them to the users for better utilization.

Methodology:

The materials (A. odoratissima wood) for the test were procured in the log form from the Bandarban district. The logs were converted to planks and sawing quality was determined. Samples, 1" × 5" × 48", were made out of wood species. Before conducting the tests, these samples were again converted into smaller pieces suitable for different tests. The test samples had 12 to 15 percent moisture content during the tests. The samples were immediately examined visually to sort out the defect-free ones after completing tests and classified based on five quality grades. The percentage of defect-free samples based on total samples was determined. The percentage was considered to be the measure of its property quality. The test was carried out by ASTM Standards: D-1666-64. Similar property tests for the study were conducted using the carpenter’s handtool, and it was accomplished at Bangladesh Forest Research Institute, Chattogram from July 2019 to June 2020. The test samples' size for planning and finishing property was 1" × 4" × 36". The test was carried out in a Whitney No. 105 single surface planer with four straight knives. The cutter head speed was 3000 rpm. The depth of cut was 1.59 mm for all runs. The feed rate was adjusted to 636 mm per minute so that the target number of knife marks was 40 per 2.54 cm. The run was made with a sharpness angle of 30 degrees and a cutting angle of 25 degrees. The exact number of samples was tested with the carpenter's hand planner, and a similar testing procedure was applied. The planning test samples were used for the test of finishing after completing all planning property tests. In the finishing test, two polish types, namely: carpa were applied, and performance was recorded based on the surface finish and physical appearances. The size of the test species for the boring property was 1" × 3" × 12". The test was conducted in a 508 mm single spindle hand feed drill press of Walker Turner Model No. 1113-41. A one-inch single twist solid center bred point type of wood-boring bit was used for the test. The drill machine was adjusted to maintain a spindle speed of 2850 rpm. In terms of handtool property operation, boring was done by a carpenter's hand drill. A one-inch single twist solid center screwed point type wood boring auger bit was used for the test. Solid hardboard was used as backing underneath to avoid the tearing and splintering of samples at the bottom during boring both for machining and handtool test. The test samples used for boring were also used for carrying out shaping tests of machining and handtool, respectively. The test was carried out in a hand-fed single spindle shaper of J. A. Fay and Egan Company, Model No. 252, with two knives having a spindle speed of 6500 rpm. Here the cutting angle was 25 degrees. The cutter used to obtain a quarter-round pattern had a radius of curvature of 12.7 mm. In the case of the handtool test, ripping of the sample was done by the carpenter’s handsaw to obtain the quarter-round pattern. The shaping was carried out by carpenter’s chisel of half-round type. The samples used for boring and shaping tests were also used for the mortising test. Machining and handtool property tests were ascertained from the separate samples. It was used as a hardboard backing when mortises were cut on each sample. Each mortise was cut with two sides parallel to the grain and perpendicular to the grain. The machining test was carried out in a foot feed vertical square hollow mortising chisel of Oliver Machinery Com., Model No. 91D. The spindle speed of the drill machine was 3600 rpm. A one-fourth inch square chisel was applied in this property test. The size of the test samples used for turning property was 1" × 1" × 6". The test was carried out in a variable speed wood lathe of Oliver Machinery Com., Model No. 159A. The speed of the variable lathe was 2400 rpm. A set of high-speed steel cutters was used to give head and cove for having different turning features and the ability to cut at different angles with the grain.

Source of Information: Int. J. Fores. Env. | Volume 03, Issue 02, 135-140, 2021

Article Link (Online Journal): https://doi.org/10.18801/ijfee.030221.15

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The study's results showed that this wood's functional properties were of good quality. The property value should be considered as an indicative value only. According to the results, it can be said that tetuya koroi wood may be used as a quality furniture material. Using this wood in the case of manufacturing furniture will reduce pressure on conventional timber species. Further investigation should be needed to get advanced information.

Knowledge Management: Journal