Hi All;
During development for the V28.1 release, I had a hand in providing necessary data for the modeling of threads. Throughout this endeavor, I created a number of threads that aren't officially supported by Alibre. This allowed us to verify that custom thread modeling indeed works in Alibre as expected. Now that the release has happened, I'd like to share these threads with all of you. These of course, are not officially supported, and are for use on an 'as is' basis. We would love to support even more, but verifying that everything about these are correct has proven to be challenging.
To add these to Alibre, simply navigate to your thread spreadsheet and replace the spreadsheet at that location with the one attached here.
DIN 405
DIN 405 threads, also known as knuckle threads or round threads, are standardized in Germany and feature a highly rounded profile with semi-circular crests and roots, typically with a 30° flank angle. The thread designation begins with "Rd" followed by the nominal diameter and pitch, and sizes range from 8 mm to 200 mm under DIN 405.
DIN 7756
DIN 7756 threads are a German standard specifying the dimensions and profile for valve threads used primarily in vehicle tire valves. These threads feature a conventional 60° V-shaped profile, similar to standard metric threads. Any root rounding is omitted in these models.
DIN 79012 Bicycle
Interchangeable or nearly so with BS811 Cycle threads that are supported in Alibre. DIN 79012 is a German standard developed to address threads used in bicycle manufacturing.
DIN 40430 Conduit
DIN 40430 defines the "PG" (Panzergewinde) steel conduit thread, a legacy German standard widely used for electrical conduit and cable gland fittings. The PG thread was specifically designed for thin-walled steel conduits, featuring a shallow thread depth and a distinctive 80° flank angle—much steeper than the 60° angle found in standard metric or unified threads.
Stanag 4155 ("40mm NATO")
One of my favorites. Due to the lower overhangs, this is a great thread for 3D printing. This is a rounded thread profile that is composed of two arcs. Alibre does not officially support a thread like this, but by carefully giving values to a 'Whitworth' setting, these can be generated with the "Average" profile being accurate. Only the average profile is dimensionally accurate for these threads. This thread is commonly used for NATO compliant respirators.
GOST 8762-75
Gost threads are very similar to STANAG 4155 and are used for respirators. Like the Stanag 4155, the gost profile uses specific values in the Whitworth configuration to generate a 'knuckle-like' profile, and only the 'average' setting is dimensionally accurate.
E27 Light Bulb
E27 refers to a widely used Edison screw base for light bulbs, standardized at a 27 mm diameter across the peaks of the thread. Like the other profiles, it is generated by feeding specific values to the 'Whitworth' profile and as such, only the average values are accurate.
I'll also add these to the 'Resources' section. I hope you all enjoy having some extra threads at your disposal.
During development for the V28.1 release, I had a hand in providing necessary data for the modeling of threads. Throughout this endeavor, I created a number of threads that aren't officially supported by Alibre. This allowed us to verify that custom thread modeling indeed works in Alibre as expected. Now that the release has happened, I'd like to share these threads with all of you. These of course, are not officially supported, and are for use on an 'as is' basis. We would love to support even more, but verifying that everything about these are correct has proven to be challenging.
To add these to Alibre, simply navigate to your thread spreadsheet and replace the spreadsheet at that location with the one attached here.
##################Threads with profile shapes that are officially supported by Alibre##################
DIN 405
DIN 405 threads, also known as knuckle threads or round threads, are standardized in Germany and feature a highly rounded profile with semi-circular crests and roots, typically with a 30° flank angle. The thread designation begins with "Rd" followed by the nominal diameter and pitch, and sizes range from 8 mm to 200 mm under DIN 405.
DIN 7756
DIN 7756 threads are a German standard specifying the dimensions and profile for valve threads used primarily in vehicle tire valves. These threads feature a conventional 60° V-shaped profile, similar to standard metric threads. Any root rounding is omitted in these models.
DIN 79012 Bicycle
Interchangeable or nearly so with BS811 Cycle threads that are supported in Alibre. DIN 79012 is a German standard developed to address threads used in bicycle manufacturing.
DIN 40430 Conduit
DIN 40430 defines the "PG" (Panzergewinde) steel conduit thread, a legacy German standard widely used for electrical conduit and cable gland fittings. The PG thread was specifically designed for thin-walled steel conduits, featuring a shallow thread depth and a distinctive 80° flank angle—much steeper than the 60° angle found in standard metric or unified threads.
##############################Threads with profile shapes that are not officially supported by Alibre##############################
Stanag 4155 ("40mm NATO")
One of my favorites. Due to the lower overhangs, this is a great thread for 3D printing. This is a rounded thread profile that is composed of two arcs. Alibre does not officially support a thread like this, but by carefully giving values to a 'Whitworth' setting, these can be generated with the "Average" profile being accurate. Only the average profile is dimensionally accurate for these threads. This thread is commonly used for NATO compliant respirators.
GOST 8762-75
Gost threads are very similar to STANAG 4155 and are used for respirators. Like the Stanag 4155, the gost profile uses specific values in the Whitworth configuration to generate a 'knuckle-like' profile, and only the 'average' setting is dimensionally accurate.
E27 Light Bulb
E27 refers to a widely used Edison screw base for light bulbs, standardized at a 27 mm diameter across the peaks of the thread. Like the other profiles, it is generated by feeding specific values to the 'Whitworth' profile and as such, only the average values are accurate.
I'll also add these to the 'Resources' section. I hope you all enjoy having some extra threads at your disposal.
