Riftsawing Technique
Riftsawing Technique - Related Videos
09:13
Using Reverse Genetics to Manipulate the NSs Gene of the Rift Valley Fever Virus MP-12 Strain to Improve Vaccine Safety and Efficacy
0 Views •
Cited by 33 •
2011
The reverse genetics system for the Rift Valley fever virus MP-12 vaccine strain is a useful tool for creating additional MP-12 mutants with increased attenuation and immunogenicity. We describe the protocol to generate and characterize NSs mutant strains.
07:06
Surgical Technique for the Implantation of a Biomimetic Artificial Intervertebral Disc in a Goat Animal Model
0 Views •
2025
This study presents a novel surgical technique for implanting a biomimetic artificial intervertebral disc (BioAID). The method ensures precise placement and stability, aiming to restore cervical spine function using a goat model. This technique shows promise for clinical application in both human and canine patients suffering from cervical spine myelopathy.
04:14
Lab Techniques - Concepts
0 Views •
2020
Measurement Accuracy The ability to repeat an experiment and get the same results, or reproducibility, is essential in scientific research. However, it’s impossible to repeat an experiment if you don’t know how you did it. Thus, scientists keep detailed records of their experiments in lab notebooks. These records include important information like the amount of each material used and descriptions of each step of the procedure. Equipment, like balances and volumetric or graduated glassware, is...
01:21
Lab Techniques - Instructor Prep
0 Views •
2020
Source: Smaa Koraym at Johns Hopkins University, MD, USA Preparation of LaboratoryExpand Here we show the laboratory preparation for 10 students working individually, with some excess. Please adjust quantities as needed. To set up for this lab experiment, wear the appropriate personal protective equipment, including a lab coat, chemical splash goggles, and gloves. Obtain enough small plastic bottles with caps for the number of students and label them ‘NaCl’. Use a...
08:12
Zebrafish Microinjection Techniques
0 Views •
2023
One of the major advantages to working with zebrafish (Danio rerio) is that their genetics can be easily manipulated by microinjection of early stage embryos. Using this technique, solutions containing genetic material or knockdown constructs are delivered into the blastomeres: the embryonic cells sitting atop the yolk of the newly fertilized egg. Delivery into the cytoplasm is achieved either through direct injection into the blastomere, or via natural cytoplasmic movements that occur after a...
FAQs
The steep grain angle improves dimensional stability by aligning the board structure more closely with the log’s radial direction. This alignment produces exceptionally straight grain and helps the finished material retain a consistent shape. For engineering applications, the result is more predictable performance in components where cupping, twisting, or irregular grain could compromise fit, appearance, or function.
Riftsawing limits the effects of tangential and radial shrinkage by positioning growth rings at an angle of approximately 30 to 60 degrees to the board face. Because shrinkage acts differently along these directions, the resulting boards experience less pronounced shape changes than materials more strongly affected by one shrinkage direction. This supports improved dimensional consistency after conversion.
Compared with plain sawing, riftsawing prioritizes straight grain and dimensional stability rather than maximum material yield. Its angled growth-ring orientation can reduce cupping and twisting, but obtaining that orientation generally requires more deliberate log or cant positioning. The trade-off is greater material waste and a lower yield, so the two approaches serve different manufacturing priorities.
A riftsawing workflow repeatedly positions and rotates the log or cant between cuts. This changing orientation allows successive boards to be produced with growth rings meeting their faces at the desired steep angle. Cut planning therefore plays an important role: it coordinates board orientation and material use while pursuing consistent grain and reduced dimensional distortion.
Riftsawing is useful for precision furniture, flooring, cabinetry, and other components that require consistent shape and clean grain. These applications benefit from boards that are less prone to cupping or twisting and that present a more uniform grain structure. The technique is especially relevant when dimensional stability and visual consistency matter more than maximizing lumber recovery.
Cut planning is important because the technique sacrifices some yield to obtain its preferred grain orientation. The operator must account for how the log or cant is positioned and rotated between cuts, while also managing the resulting material waste. Effective planning helps balance board quality, dimensional stability, and usable output for the intended engineering or manufacturing application.