Published by Gellis apps on Sep 5, 2023

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About Fabricators Handbook

1. Calculators include, Angle Calculators to enable the fabricator to layout accurately small or large fabrications, Pitch Calculator for PCD's and straight pitches, Diameter and Circumference calculator for working out the required developed length for rolling and a Bisecting Chord calculator that works out the inside or outside radius of an object using a straight edge and a ruler.

2. As a fabricator of 45+ years, the last 30 or so as the workshop manager, I have constantly used trigonometry etc. to calculate cones, segmental bends and much more.

3. The Fabricators Handbook is a collection of apps useful to the experienced fabricator and novice.

4. Sheet metal pattern development tools for cones, segmental bends, set on pipes.

5. Nowadays I am constantly asked by the fabricators to calculate developed lengths etc. to save them the time and effort of laying it out.

6. Tables for flanges, tube schedules, elbows and tees, as well as metric and unc drilling / tapping sizes.

7. Plus flange/ tube tables, various calculators and more.

8. I hope that from your feedback/comments I will be able to add extra relevant features and amendments in future editions.

9. Various pipe and cone developing app for wraps and plate.

10. I have developed this app so that they can do it for themselves and therefore save “MY TIME”.

11. This could be the most useful tool in your toolbox.

Fabricators Handbook Customer Insights

1. An option to print or email developed shape would be betterThis is the best app ive seen in a long time .... been in a fabrication shop for thirteen years now...only on guy knows this kind of layout, and won't show any of us younger guys....thank you so much!!!! Very useful!!!Been a structural plate fitter/welder for 22 yrs and honestly there's so much we forget from trade school and this gets us outta a bind pretty quick.

2. All my professional reference books for engineering, statistics and law books ended up missing, so imagine my surprise to see one of the best engineering ever in the Google Play Store??? 🙂 We used to pay top dollar for this and other engineering books back 20 years ago, so to have it available online is amazing.

3. Im old school so I never really carried smart phones or grew up with them like the younger guys but I keep a tablet in my toolbox nowSir, the app is very good but needs a white background so everything can be visible more clearly.

4. Though I cant use it to its full potential ... Great App.This is a great little app you've developed and I always seem to find something handy to reference as a metalworking hobbyist.

5. Drg & font of drgs are need to be sharp edges.Hey, GREAT APP... I'm a retired Ornamental Blacksmith, Welder, Metal Fabricator ... 20yrs.

6. Question: When I dock my Lenovo Smart ALEXA tablet and launch fabricators handbook,it puts the tablet into portrait mode.

7. Great book!Incredibly useful app! Thanks very much for it.

8. I have been out of the engineering profession for a few years and have moved cross country.

9. Thanks for your response.Great app.

10. However I've noticed discrepancies in results for truncated cone in this app and the stand alone cone developer app by same developer.

11. Even the apps that were launched in landscape mode become portrait orientation.

Steps to Troubleshoot & Fix Fabricators Handbook Issues

1. Fix Fabricators Handbook Not Working/Crashes/Errors/Unresponsive & Black/White screen:


  1. Restart Fabricators Handbook: Restarting the app will resolve most errors.
  2. Update the Fabricators Handbook App. Here is how:
    1. On Android goto PlayStore » Search for "Fabricators Handbook" » Open Fabricators Handbook » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for Fabricators Handbook » click "UPDATE".
  3. Clear Fabricators Handbook app cache: Clearing cached data will force your app to retrieve the latest data directly from Fabricators Handbook servers.
    1. On Android, goto Settings » Apps » Select "Fabricators Handbook" » click Storage » click "Clear Cache".
  4. Check Fabricators Handbook app permissions. If any of these permissions required to use your device's features are disenabled, Fabricators Handbook might not work.
  5. Uninstall and reinstall Fabricators Handbook. If nothing else has worked, completely uninstall Fabricators Handbook then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing Fabricators Handbook not working


2. Fix Fabricators Handbook Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make Fabricators Handbook be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to Fabricators Handbook not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, Fabricators Handbook may not be able to connect to the Internet when running in the background.

Reported Issues