Tuesday, January 6, 2015

Quick and dirty Spring Winder

Making small springs for miniature Colt

 The winder was fabricated using some scrap 80/20 parts in the scrap bin and a 5C spin fixture.Using a tail stock type support for the extra small mandrels will enable me to turn those extra small compression springs for the miniature Colt 1911.
The split Boxwood and brass thumb screw provides a safe and clean way to adjust tension on the piano wire as it is being rolled around the mandrel


 Above picture shows a rectangle mandrel installed for forming the rectangle magazine spring.

The spring above was "Stressed Relieved" before removing spring from the Mandrel.
This prevents the spring from being distorted when removed.To see what a non stress releived rectangle spring looks like and more pictures of the spring winder go.HERE 
The spring winder photos are at the end.  


Monday, September 29, 2014

New design sanding block that has the ability to tighten the sand paper after installing .The design will support almost any thickness of paper.

For more info go HERE

Sunday, September 21, 2014

Thursday, July 10, 2014

Miniature Colt 1911 and New Style Mold frames

This is the first casting of the receive and slide,scale is .375

Above picture is all the 1911 parts that were 3D Printed. RTV molds were  made from these. 

For more pictures of the 1911 go HERE

A few mold frames used for making RTV molds for the 1911 parts.
For more details go to Mold Frames

Saturday, August 10, 2013

A few Pantograph projects

I offered to machine a friends 4 inch vise kit if he bought me one. He came out OK as the casting Kits were a little more involved than I had planned.
The overall length of the Wilton bullet vise kits is 4 inches. I decided to make a 1/2 scale of the kit with a few modifications. My castings will have the original Wilton logo and will have the female key way cast into the body eliminating a tedious broaching operation for the movable jaw. 

  For current updates go HERE 1

Saturday, May 25, 2013

Last Run of Scrapers

Please note as of 1pm EST on 06/02/2013 all inserts are sold out.

Following a spring cleaning of the shop I found a batch of castings for the Stanley "Bailey" and decided to finish them up. For more pictures on the project go Here
To see Chris's review go to Chris
Or see what Walt Q had to say Walt
Also finished a few more of the chair scrapers. See April 2011 post on this blog or go to chair scrapers
For pricing and availability e mail me at hamlertools@windstream.net

Tuesday, November 29, 2011

Cerro metal molds

I reached a point in my 1/3 scale wheel lock project where I had all the master parts made and was ready to cast multible parts. In all my past miniature projects I have made various type molds for injecting the wax to be used for investment casting. For the wheel lock I decided to use plastic parts instead of wax because of the greater detail and sharp corners that can be achieved with plastic. In order to inject plastic into a mold I needed a mold material that could hold up to the higher temperatures and pressures used with a plastic injection machine. Following are a few photos of the mold making process and the cheap press I made from scrap parts, It is used to compress the Cerro metal quickly after the molded Cerro is poured in the mold. This compacts the Cerro metal causing a tighter crystal structure in the metal which produces extremely fine detail.Another benefit of the cerro molds is the expansion of the eutectic metal thus parts that are not smaller due to mold shrinkage, the cerro also cools the injected wax or plastic very quick which reduces cycle time of making parts.
To see the 1/3 scale wheel lock project go to Miniature Wheel Lock