Thursday, January 18, 2018

Got a New Set of Wheels!

New Wheels for Another Belt Grinder Project


In advance of my third grinder project I ordered up some of Oregon Blade Maker's 4 piece aluminum wheel set with a drive wheel having a 5/8" bore.

It should be noted that not all motors can use this drive wheel. Only motors with 5/8" keyed shafts can use this set. Fortunately, Oregon Blade Maker offers a set for 7/8" and 24 mm motor shafts. See the links below for the different bore sizes




The parcel came very well packaged. These made it half way to the North Pole!







Each wheel was individually wrapped in bubble wrap.



The machining on these wheels is very good. All the bearings are sealed and take a 1/2 bolt to mount.


This set has a drive wheel with a 5/8" bore and has a 3/16" keyway. This will work for a NEMA 56 frame motor. NOTE: if your motor is has a different size shaft, say 7/8" then be sure to order the correct set.







The 4" drive wheel and 3" tracking wheel are crowned meaning they have an arch to the part of the wheel where the belt will run.


This is where you get the long 1/8" hex wrench down to lock the setscrew into the keystock



And I got this cool sticker to go on my machine!
If you are looking to buy a wheel set these are the one's I recommend:

NEMA 56 frame motors have a 5/8" shaft then look at the 5/8" bore four piece aluminum grinder wheel set

NEMA 143T and 145T motors have a 7/8" shaft then look at the 7/8" bore four piece aluminum grinder wheel set

If you are using stepped pulleys, pillow blocks and shaft is a 3/4", the 3/4" bore drive wheel comes in a set of four wheels. 3/4" bore four piece aluminum grinder wheel set

If you have an IEC motor with a 24 mm shaft, presently only the glass filled nylon drive wheel is available. 24 mm bore drive wheel only. But you can build a set by adding a three piece wheel set to the drive wheel.

Happy grinding!

Thursday, December 21, 2017

Merry Christmas

Merry Christmas Fellow Makers!

It's a busy time of year for most of us with holidays, visiting friends and family. It's also a time to reflect on the past year and be thankful for everything we have. A year certainly goes by faster as we get older. ;-)

I'd like to say a great big thank you to all my friends in the knifemaking community and wish them and their families all the best in this holiday season.

My friend Mike Ware has a YouTube channel called Absorbed Self Reliance. Mike put together an Oregon Blade Maker 2 x 72" grinder with a VFD and motor in which I offered him some help with the electrical things.





Thank you Mike for this great look at your machine. We  hope it serves you well.

Look after each other and remember to support your local food bank.

All the best for 2018!
Happy grinding!

Dan

Saturday, November 11, 2017

Some Honesuki Ready for Shipping

Three honesuki wa made from AEB-L ready for new homes. 





































The left knife is desert ironwood with jade composite spacer. The middle one is stabilised koa with stainless and brass. The right one is rennaisance acrylester with brass and black paper micarta.

Lots more to do before Christmas!

Dan

Wednesday, September 20, 2017

Hollow Grind Calculator

The Perplex of Convex


The discussion comes around every once in a while about wheel diameter to stock thickness and how high a concave or hollow grind will be. Some time ago Bimjo published a web based calculator for this based on Rob Frink's formula. Bimjo's widget seems to have disappeared from the web, but some Wayback pages can be found. Using the same formula I made a new online version.


The idea is that you choose a wheel diameter and some steel thickness and lastly the edge thickness. The calculation is done and you receive the height of the grind. Link is here: http://dcknives.com/public/grind_angle_concave.php

Cheers!

Dan