Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Garage - Tools> Homemade low speed drill press conversion
User Name
lost password?   |   register now

Thread: Homemade low speed drill press conversion Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
09-06-2012 01:28 PM
Trucknut Nice clean-up job on the drill press
09-06-2012 12:40 PM
russlaferrera Should have made mention to drill the hole in the blank off center. This allows you to make belt adjustments.
08-29-2012 11:06 PM
Homemade low speed drill press conversion

Bought this awhile back off of craigslist for a decent price. 1950's Craftsman floor model DP. It was pretty scungy but ran well and the spindle spun true. I tore it down and cleaned it up. Here's a before and after.

The problem is I do mostly metal work so I need much slower speeds than what it provides. It was originally a variable (note the stepped pulleys) but even the slowest speed was way too fast for what I needed. A low speed conversion was optional back in the '50's but good luck trying to find one! So.....I decided to make my own. It's pretty simple, most anyone can do it!

Here's all you need. Cost about $25 total.

Drilled a hole in the steel blank, inserted and welded the bolt to the blank.

Flipped it over, welded the blank to the top of the DP post and installed the first bronze bushing.

Next, I slipped on the new step pulley and another bronze bushing.

Installed the flat washer and a nylock nut. Do not tighten! Installed new belts and there you have it!

The lowest speed I have is now 175 rpm! Perfect for cutting 1/4" plate or drilling forged axles! Bought the pulley from MSC, got the bushings and hardware at Home Depot and got the belts at a local small engine repair shop. This thing works great! I just built my spring perch and drilled lightening holes in it.

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -6. The time now is 10:15 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.